ls /home/daytona/workspace/ 2>/dev/null && echo "---" && python3 -c "import reportlab; print('reportlab ok')" && python3 -c "from reportlab.lib.pagesizes import A4; print('A4 ok')"

mkdir -p /home/daytona/workspace/oral-path-notes && cat > /home/daytona/workspace/oral-path-notes/generate_pdf.py << 'PYEOF' from reportlab.lib.pagesizes import A4 from reportlab.lib import colors from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.units import mm, cm from reportlab.platypus import (SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, HRFlowable, PageBreak, KeepTogether) from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_JUSTIFY from reportlab.platypus import ListFlowable, ListItem OUTPUT = "/home/daytona/workspace/oral-path-notes/Bacterial_Infections_Oral_Cavity_NEET_MDS.pdf" doc = SimpleDocTemplate( OUTPUT, pagesize=A4, rightMargin=20*mm, leftMargin=20*mm, topMargin=20*mm, bottomMargin=20*mm, title="Bacterial Infections of Oral Cavity – NEET MDS Notes", author="Orris AI | Based on Shafer's Textbook of Oral Pathology" ) W, H = A4 # ── Color palette ────────────────────────────────────────────────────────────── DARK_BLUE = colors.HexColor("#1a3a5c") MED_BLUE = colors.HexColor("#2563a8") LIGHT_BLUE = colors.HexColor("#dbeafe") ACCENT = colors.HexColor("#e67e22") GREEN = colors.HexColor("#16a34a") RED = colors.HexColor("#dc2626") YELLOW_BG = colors.HexColor("#fef9c3") PURPLE = colors.HexColor("#7c3aed") TEAL = colors.HexColor("#0d9488") GREY_LIGHT = colors.HexColor("#f1f5f9") GREY_MID = colors.HexColor("#cbd5e1") WHITE = colors.white # ── Styles ───────────────────────────────────────────────────────────────────── styles = getSampleStyleSheet() def S(name, **kw): return ParagraphStyle(name, **kw) sTitle = S("sTitle", fontSize=22, fontName="Helvetica-Bold", textColor=WHITE, alignment=TA_CENTER, leading=28, spaceAfter=4) sSubTitle = S("sSubTitle", fontSize=12, fontName="Helvetica", textColor=WHITE, alignment=TA_CENTER, leading=16, spaceAfter=2) sH1 = S("sH1", fontSize=14, fontName="Helvetica-Bold", textColor=WHITE, alignment=TA_LEFT, leading=18, spaceBefore=6, spaceAfter=4, leftIndent=4) sH2 = S("sH2", fontSize=11, fontName="Helvetica-Bold", textColor=DARK_BLUE, alignment=TA_LEFT, leading=15, spaceBefore=6, spaceAfter=3) sH3 = S("sH3", fontSize=10, fontName="Helvetica-Bold", textColor=MED_BLUE, alignment=TA_LEFT, leading=13, spaceBefore=4, spaceAfter=2) sBody = S("sBody", fontSize=9, fontName="Helvetica", textColor=colors.black, alignment=TA_JUSTIFY, leading=13, spaceAfter=3, leftIndent=4) sBullet = S("sBullet", fontSize=9, fontName="Helvetica", textColor=colors.black, alignment=TA_LEFT, leading=13, spaceAfter=2, leftIndent=12, firstLineIndent=-8) sKey = S("sKey", fontSize=9, fontName="Helvetica-Bold", textColor=DARK_BLUE, alignment=TA_LEFT, leading=13, spaceAfter=2, leftIndent=12, firstLineIndent=-8) sMCQ_Q = S("sMCQ_Q", fontSize=9, fontName="Helvetica-Bold", textColor=colors.black, alignment=TA_LEFT, leading=13, spaceAfter=2, leftIndent=0) sMCQ_OPT = S("sMCQ_OPT", fontSize=9, fontName="Helvetica", textColor=colors.black, alignment=TA_LEFT, leading=12, spaceAfter=1, leftIndent=14) sMCQ_ANS = S("sMCQ_ANS", fontSize=9, fontName="Helvetica-Bold", textColor=GREEN, alignment=TA_LEFT, leading=12, spaceAfter=4, leftIndent=4) sNote = S("sNote", fontSize=8.5, fontName="Helvetica-Oblique", textColor=PURPLE, alignment=TA_LEFT, leading=12, spaceAfter=2, leftIndent=8) sWarn = S("sWarn", fontSize=8.5, fontName="Helvetica-Bold", textColor=RED, alignment=TA_LEFT, leading=12, spaceAfter=2, leftIndent=8) sTableH = S("sTableH", fontSize=8.5, fontName="Helvetica-Bold", textColor=WHITE, alignment=TA_CENTER, leading=11) sTableB = S("sTableB", fontSize=8, fontName="Helvetica", textColor=colors.black, alignment=TA_LEFT, leading=11) # ── Helpers ──────────────────────────────────────────────────────────────────── def chapter_header(title, subtitle=""): data = [[Paragraph(title, sTitle)]] if subtitle: data.append([Paragraph(subtitle, sSubTitle)]) t = Table(data, colWidths=[W - 40*mm]) t.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), DARK_BLUE), ("TOPPADDING", (0,0), (-1,-1), 8), ("BOTTOMPADDING", (0,0), (-1,-1), 8), ("LEFTPADDING", (0,0), (-1,-1), 10), ("RIGHTPADDING", (0,0), (-1,-1), 10), ("ROUNDEDCORNERS", [6]), ])) return t def section_header(title): t = Table([[Paragraph(title, sH1)]], colWidths=[W - 40*mm]) t.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), MED_BLUE), ("TOPPADDING", (0,0), (-1,-1), 5), ("BOTTOMPADDING", (0,0), (-1,-1), 5), ("LEFTPADDING", (0,0), (-1,-1), 8), ("RIGHTPADDING", (0,0), (-1,-1), 8), ])) return t def sub_section(title): t = Table([[Paragraph(title, sH2)]], colWidths=[W - 40*mm]) t.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), LIGHT_BLUE), ("TOPPADDING", (0,0), (-1,-1), 4), ("BOTTOMPADDING", (0,0), (-1,-1), 4), ("LEFTPADDING", (0,0), (-1,-1), 6), ("BOTTOMPADDING", (0,0), (-1,-1), 4), ("LINEBELOW", (0,0), (-1,-1), 1, MED_BLUE), ])) return t def key_point(txt): t = Table([[Paragraph("★ " + txt, sKey)]], colWidths=[W - 40*mm]) t.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), YELLOW_BG), ("TOPPADDING", (0,0), (-1,-1), 3), ("BOTTOMPADDING", (0,0), (-1,-1), 3), ("LEFTPADDING", (0,0), (-1,-1), 6), ("LINEBELOW", (0,0), (-1,-1), 0.5, ACCENT), ])) return t def mnemonic(txt): t = Table([[Paragraph("🧠 MNEMONIC: " + txt, sNote)]], colWidths=[W - 40*mm]) t.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), colors.HexColor("#f3e8ff")), ("TOPPADDING", (0,0), (-1,-1), 4), ("BOTTOMPADDING", (0,0), (-1,-1), 4), ("LEFTPADDING", (0,0), (-1,-1), 6), ("LINEBELOW", (0,0), (-1,-1), 0.5, PURPLE), ])) return t def examtip(txt): t = Table([[Paragraph("⚡ EXAM TIP: " + txt, sWarn)]], colWidths=[W - 40*mm]) t.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), colors.HexColor("#fff1f2")), ("TOPPADDING", (0,0), (-1,-1), 4), ("BOTTOMPADDING", (0,0), (-1,-1), 4), ("LEFTPADDING", (0,0), (-1,-1), 6), ("LINEBELOW", (0,0), (-1,-1), 0.5, RED), ])) return t def bullet(txt, bold_part=""): return Paragraph("• " + txt, sBullet) def make_table(headers, rows, col_widths=None): if col_widths is None: cw = (W - 40*mm) / len(headers) col_widths = [cw] * len(headers) data = [[Paragraph(h, sTableH) for h in headers]] for row in rows: data.append([Paragraph(str(c), sTableB) for c in row]) t = Table(data, colWidths=col_widths, repeatRows=1) style = [ ("BACKGROUND", (0,0), (-1,0), DARK_BLUE), ("BACKGROUND", (0,1), (-1,-1), WHITE), ("ROWBACKGROUNDS",(0,1), (-1,-1), [WHITE, GREY_LIGHT]), ("GRID", (0,0), (-1,-1), 0.5, GREY_MID), ("TOPPADDING", (0,0), (-1,-1), 4), ("BOTTOMPADDING", (0,0), (-1,-1), 4), ("LEFTPADDING", (0,0), (-1,-1), 5), ("RIGHTPADDING", (0,0), (-1,-1), 5), ("VALIGN", (0,0), (-1,-1), "TOP"), ] t.setStyle(TableStyle(style)) return t def mcq(num, question, options, answer_letter, explanation=""): elems = [] elems.append(Paragraph(f"Q{num}. {question}", sMCQ_Q)) for opt in options: elems.append(Paragraph(opt, sMCQ_OPT)) ans_text = f"Ans: {answer_letter}" if explanation: ans_text += f" | {explanation}" elems.append(Paragraph(ans_text, sMCQ_ANS)) elems.append(Spacer(1, 3)) return elems def sp(h=4): return Spacer(1, h) # ══════════════════════════════════════════════════════════════════════════════ # BUILD CONTENT # ══════════════════════════════════════════════════════════════════════════════ story = [] # ─── COVER ─────────────────────────────────────────────────────────────────── cover_data = [ [Paragraph("NEET MDS ORAL PATHOLOGY", S("ct1", fontSize=13, fontName="Helvetica", textColor=ACCENT, alignment=TA_CENTER, leading=16))], [Paragraph("Bacterial Infections of the\nOral Cavity", S("ct2", fontSize=26, fontName="Helvetica-Bold", textColor=WHITE, alignment=TA_CENTER, leading=34))], [Paragraph("Detailed MCQ-Oriented Notes", S("ct3", fontSize=13, fontName="Helvetica-Oblique", textColor=LIGHT_BLUE, alignment=TA_CENTER, leading=18))], [Spacer(1, 8)], [Paragraph("Based on Shafer's Textbook of Oral Pathology", S("ct4", fontSize=10, fontName="Helvetica", textColor=colors.HexColor("#94a3b8"), alignment=TA_CENTER, leading=14))], [Paragraph("Chapter Coverage: All major bacterial infections relevant to NEET MDS", S("ct5", fontSize=9, fontName="Helvetica-Oblique", textColor=colors.HexColor("#94a3b8"), alignment=TA_CENTER, leading=12))], ] cover_table = Table(cover_data, colWidths=[W - 40*mm]) cover_table.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), DARK_BLUE), ("TOPPADDING", (0,0), (-1,-1), 14), ("BOTTOMPADDING", (0,0), (-1,-1), 14), ("LEFTPADDING", (0,0), (-1,-1), 20), ("RIGHTPADDING", (0,0), (-1,-1), 20), ])) story.append(cover_table) story.append(sp(10)) # Topics box topics = [ ["Topics Covered"], ["1. Acute Necrotizing Ulcerative Gingivitis (ANUG) / Vincent's Infection"], ["2. Noma (Cancrum Oris)"], ["3. Acute Osteomyelitis of Jaws"], ["4. Chronic Osteomyelitis of Jaws"], ["5. Actinomycosis (Cervicofacial)"], ["6. Tuberculosis of Oral Cavity"], ["7. Syphilis of Oral Cavity"], ["8. Scarlet Fever (Oral Manifestations)"], ["9. Leprosy of Oral Cavity"], ["10. Ludwig's Angina"], ["11. Comparative MCQ Tables & High-Yield Points"], ] tbl = Table([[Paragraph(r[0], S("tp", fontSize=9.5, fontName="Helvetica-Bold" if i==0 else "Helvetica", textColor=WHITE if i==0 else colors.black, leading=14))] for i, r in enumerate(topics)], colWidths=[W - 40*mm]) ts = TableStyle([ ("BACKGROUND", (0,0), (0,0), MED_BLUE), ("BACKGROUND", (0,1), (-1,-1), GREY_LIGHT), ("ROWBACKGROUNDS",(0,1), (-1,-1), [WHITE, GREY_LIGHT]), ("TOPPADDING", (0,0), (-1,-1), 4), ("BOTTOMPADDING", (0,0), (-1,-1), 4), ("LEFTPADDING", (0,0), (-1,-1), 10), ("GRID", (0,0), (-1,-1), 0.3, GREY_MID), ]) tbl.setStyle(ts) story.append(tbl) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 1: ANUG / VINCENT'S INFECTION # ═══════════════════════════════════════════════════════════════ story.append(section_header("1. ACUTE NECROTIZING ULCERATIVE GINGIVITIS (ANUG)")) story.append(sp(4)) story.append(Paragraph("Also called: Vincent's Infection | Trench Mouth | Fusospirochetal Gingivitis", sNote)) story.append(sp(4)) story.append(sub_section("Etiology & Causative Organisms")) orgs = [ ["Organism", "Type", "Key Feature"], ["Fusobacterium nucleatum", "Gram-negative anaerobic rod", "Primary causative organism"], ["Treponema vincentii (Borrelia vincentii)", "Spirochete", "Associated organism – forms 'fusospirochetal complex'"], ["Prevotella intermedia", "Gram-negative anaerobe", "Elevated in ANUG, especially in pregnancy"], ["Bacteroides species", "Gram-negative anaerobe", "Secondary colonizer"], ] story.append(make_table(orgs[0], orgs[1:], col_widths=[65*mm, 65*mm, 47*mm])) story.append(sp(4)) story.append(key_point("Fusobacterium + Treponema = Fusospirochetal complex (ANUG classic association)")) story.append(sp(3)) story.append(examtip("Most common cause of ANUG = Fusobacterium nucleatum + Borrelia (Treponema) vincentii")) story.append(sp(5)) story.append(sub_section("Predisposing Factors (Mnemonic: SNIPS-D)")) story.append(mnemonic("SNIPS-D: Smoking, Nutritional deficiency (Vit C), Immunosuppression, Poor oral hygiene, Stress, Debilitating illness")) factors = [ bullet("Stress (most important local precipitating factor)"), bullet("Smoking (significant predisposing factor)"), bullet("Poor oral hygiene"), bullet("Nutritional deficiencies (Vitamin C, B-complex)"), bullet("Debilitating systemic diseases (HIV/AIDS, leukemia)"), bullet("Immunosuppression"), bullet("Previous episode of ANUG"), ] for f in factors: story.append(f) story.append(sp(5)) story.append(sub_section("Clinical Features")) cf = [ ["Feature", "Description"], ["Age group", "Young adults (18-30 yrs), rare in children in developed countries"], ["Chief complaint", "Severe spontaneous gingival pain + bleeding"], ["Pathognomonic sign", "Punched-out ulceration of interdental papillae (cratered papillae)"], ["Ulcer base", "Covered by grey/yellowish pseudomembrane (slough)"], ["Smell", "Characteristic fetid odor (halitosis)"], ["Systemic signs", "Low-grade fever, malaise, lymphadenopathy (submandibular)"], ["Saliva", "Increased, ropy/viscid"], ["Pain character", "Spontaneous, severe, punched-out feeling"], ] story.append(make_table(cf[0], cf[1:], col_widths=[55*mm, 122*mm])) story.append(sp(4)) story.append(key_point("Pathognomonic: Punched-out/crater-like ulceration of interdental papillae with grey pseudomembrane")) story.append(sp(4)) story.append(examtip("ANUG can progress to Noma (cancrum oris) if untreated in malnourished/immunocompromised children")) story.append(sp(5)) story.append(sub_section("Histopathology (Shafer's)")) hp = [ bullet("Non-specific ulceration with surface fibrin/necrotic debris (pseudomembrane)"), bullet("Dense neutrophilic infiltrate in superficial zone"), bullet("Zone 1 (surface): Bacterial layer – abundant bacteria, fibrin, necrotic cells"), bullet("Zone 2: Neutrophil-rich zone – dense PMN infiltration"), bullet("Zone 3: Necrotic zone – tissue necrosis"), bullet("Zone 4: Spirochetal infiltration zone – living spirochetes penetrate tissue"), bullet("Underlying connective tissue: Dilated blood vessels, edema, chronic inflammatory cells"), ] for h in hp: story.append(h) story.append(key_point("4 Zones of ANUG (Listgarten): Bacterial → Neutrophil-rich → Necrotic → Spirochetal infiltration (deep to surface lesion)")) story.append(sp(5)) story.append(sub_section("Treatment")) for t in [bullet("Debridement + gentle curettage"), bullet("Metronidazole (drug of choice) or Penicillin V"), bullet("Hydrogen peroxide mouthwash (1.5-3%)"), bullet("Chlorhexidine rinse"), bullet("Improve oral hygiene"), bullet("Address predisposing factors")]: story.append(t) story.append(sp(6)) story.append(sub_section("MCQs – ANUG")) qs = [ (1, "The 'punched-out' ulceration of interdental papillae is pathognomonic of:", ["A. Herpetic gingivostomatitis", "B. Acute Necrotizing Ulcerative Gingivitis", "C. Pemphigus vulgaris", "D. Aphthous stomatitis"], "B", "Punched-out cratered interdental papillae with grey pseudomembrane is the hallmark of ANUG"), (2, "Which organism forms the 'fusospirochetal complex' in ANUG?", ["A. Actinomyces israelii + Streptococcus", "B. Fusobacterium + Treponema vincentii", "C. Prevotella + Porphyromonas", "D. Staphylococcus + Fusobacterium"], "B", "Fusobacterium nucleatum and Treponema (Borrelia) vincentii form the classic fusospirochetal complex"), (3, "Drug of choice for ANUG is:", ["A. Amoxicillin", "B. Tetracycline", "C. Metronidazole", "D. Erythromycin"], "C", "Metronidazole is DOC for ANUG (effective against anaerobes including Fusobacterium and spirochetes)"), (4, "Histologically, ANUG shows how many zones?", ["A. 2", "B. 3", "C. 4", "D. 5"], "C", "Listgarten described 4 zones: Bacterial zone, Neutrophil-rich zone, Necrotic zone, Spirochetal infiltration zone"), (5, "ANUG is also known as all EXCEPT:", ["A. Vincent's infection", "B. Trench mouth", "C. Ludwig's angina", "D. Fusospirochetal gingivitis"], "C", "Ludwig's angina is a separate condition – submandibular space infection, not related to ANUG"), ] for q in qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 2: NOMA # ═══════════════════════════════════════════════════════════════ story.append(section_header("2. NOMA (CANCRUM ORIS)")) story.append(sp(4)) story.append(Paragraph("Also called: Cancrum Oris | Stomatitis Gangrenosa | Gangrenous Stomatitis | Fusospirochetal Gangrene", sNote)) story.append(sp(4)) story.append(sub_section("Key Facts")) kf = [ ["Feature", "Detail"], ["Definition", "Rapidly progressive gangrenous infection destroying soft and hard tissues of face/mouth"], ["Age group", "Children 1-7 years (most common); rarely newborns (Noma neonatorum)"], ["Geography", "Predominantly in sub-Saharan Africa, developing countries"], ["Causative organisms", "Fusobacterium necrophorum (primary), Prevotella intermedia, Bacteroides, Treponema"], ["Predisposing factors", "Severe malnutrition (esp. protein deficiency), measles, immunosuppression, poor oral hygiene"], ["Mortality", "Up to 80-90% if untreated"], ["Starts as", "Extension/complication of ANUG (necrotizing ulcerative stomatitis)"], ] story.append(make_table(kf[0], kf[1:], col_widths=[55*mm, 122*mm])) story.append(sp(4)) story.append(key_point("Noma = Most severe end of the necrotizing periodontal disease spectrum")) story.append(sp(3)) story.append(examtip("Fusobacterium necrophorum (NOT nucleatum) is primary in Noma; Fusobacterium nucleatum is primary in ANUG")) story.append(sp(5)) story.append(sub_section("Clinical Stages (WHO Staging)")) stages = [ ["Stage", "Features"], ["Stage 0", "Gingivitis (precursor)"], ["Stage 1", "Oedema of cheek, fetid odor"], ["Stage 2", "Ulceration – oedematous area becomes necrotic; black eschar on skin"], ["Stage 3", "Gangrenous – full thickness destruction; sequestration begins"], ["Stage 4", "Scarring – fibrosis, trismus, facial disfigurement"], ["Stage 5", "Sequelae – ankylosis, scarring, destruction of bone"], ] story.append(make_table(stages[0], stages[1:], col_widths=[30*mm, 147*mm])) story.append(sp(5)) story.append(sub_section("Histopathology")) for h in [bullet("Surface necrosis with bacterial colonies"), bullet("Thrombosis of blood vessels (ischemic necrosis)"), bullet("Dense infiltrate of PMNs, lymphocytes"), bullet("Destruction of muscle, bone, and periosteum"), bullet("Gram-negative bacilli and spirochetes visible on smear")]: story.append(h) story.append(sp(5)) story.append(sub_section("MCQs – Noma")) for elem in mcq(6, "Noma (cancrum oris) is most commonly seen in:", ["A. Elderly diabetics", "B. Malnourished children aged 1-7 years", "C. Immunocompromised adults", "D. Teenagers with poor hygiene"], "B", "Noma predominantly affects malnourished children aged 1-7 years in developing countries"): story.append(elem) for elem in mcq(7, "Primary causative organism of Noma is:", ["A. Actinomyces israelii", "B. Fusobacterium nucleatum", "C. Fusobacterium necrophorum", "D. Treponema pallidum"], "C", "Fusobacterium necrophorum is the primary organism in Noma (contrast: F. nucleatum in ANUG)"): story.append(elem) for elem in mcq(8, "Noma is considered the most severe end of which disease spectrum?", ["A. Pericoronitis spectrum", "B. Necrotizing periodontal disease spectrum", "C. Granulomatous disease spectrum", "D. Reactive lesion spectrum"], "B", "Noma represents the extreme end of the necrotizing periodontal disease spectrum (ANUG→ANUP→Noma)"): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 3: ACTINOMYCOSIS # ═══════════════════════════════════════════════════════════════ story.append(section_header("3. ACTINOMYCOSIS (CERVICOFACIAL)")) story.append(sp(4)) story.append(sub_section("Causative Organism & Nature")) for b in [bullet("Actinomyces israelii – most common (primary pathogen)"), bullet("Actinomyces naeslundii, A. odontolyticus, A. viscosus – other species"), bullet("Gram-positive, non-acid-fast, filamentous, branching rod"), bullet("Anaerobic to microaerophilic"), bullet("Normal commensal of oral cavity (tonsillar crypts, dental plaques, gingival sulcus)"), bullet("NOT a true fungus – historically misclassified"), bullet("Disease caused by endogenous infection after local trauma")]: story.append(b) story.append(sp(3)) story.append(key_point("Actinomyces israelii: Gram-positive, branching, filamentous, non-spore-forming anaerobe – NOT a fungus")) story.append(sp(3)) story.append(mnemonic("'Actino' = Ray fungus (name only – actually a bacterium!) | 'Israelii' = most common in oral/cervicofacial")) story.append(sp(5)) story.append(sub_section("Forms of Actinomycosis")) forms = [ ["Type", "% of Cases", "Key Features"], ["Cervicofacial (most common)", "50-60%", "Jaw/neck; 'lumpy jaw'; after dental procedure/trauma"], ["Abdominal/pelvic", "20-25%", "Associated with IUD use; appendicitis-like"], ["Thoracic/pulmonary", "15-20%", "After aspiration; mimics carcinoma on X-ray"], ["Primary cutaneous", "Rare", "Direct skin inoculation"], ] story.append(make_table(forms[0], forms[1:], col_widths=[70*mm, 35*mm, 72*mm])) story.append(sp(5)) story.append(sub_section("Clinical Features – Cervicofacial")) cf2 = [ ["Feature", "Description"], ["Site", "Angle of mandible (most common), submandibular region"], ["Onset", "Insidious; follows dental extraction, jaw fracture, or trauma"], ["Swelling", "Woody hard, board-like induration (due to extensive fibrosis)"], ["Skin", "Reddish-blue discoloration; multiple sinuses draining to skin"], ["Sinus tracts", "Characteristic – drain yellowish pus containing sulfur granules"], ["Sulfur granules", "Yellowish granules 1-2 mm; pathognomonic – represent colonies of Actinomyces"], ["Pain", "Usually minimal (chronic, indolent course)"], ["Trismus", "Present in advanced cases"], ["Bone involvement", "May show osteomyelitis on X-ray"], ] story.append(make_table(cf2[0], cf2[1:], col_widths=[50*mm, 127*mm])) story.append(sp(4)) story.append(key_point("SULFUR GRANULES = Pathognomonic of Actinomycosis (yellow granules in pus; actually bacterial colonies, NOT sulfur)")) story.append(sp(3)) story.append(examtip("Sulfur granules on microscopy: Basophilic center with eosinophilic, club-shaped peripheral fringe (Splendore-Hoeppli phenomenon)")) story.append(sp(5)) story.append(sub_section("Histopathology")) for h in [bullet("Central zone: Basophilic colony of Actinomyces (tangled filaments)"), bullet("Peripheral fringe: Eosinophilic club-shaped projections = Splendore-Hoeppli material"), bullet("Surrounding: Dense neutrophilic abscess (microabscess)"), bullet("Outer zone: Chronic granulomatous reaction – lymphocytes, plasma cells, macrophages, giant cells"), bullet("Extensive fibrosis in surrounding stroma (explains woody hardness)"), bullet("NO caseation necrosis (differentiates from TB)")]: story.append(h) story.append(sp(3)) story.append(key_point("Actinomycosis = Microabscess containing sulfur granule + Splendore-Hoeppli phenomenon + Peripheral fibrosis")) story.append(sp(4)) story.append(sub_section("Diagnosis")) diag = [ ["Method", "Finding"], ["Gram stain of pus", "Gram-positive branching filaments amid PMNs"], ["Culture", "Anaerobic culture; 'molar tooth' colonies in 2-3 weeks"], ["Histopathology", "Sulfur granules with Splendore-Hoeppli fringe"], ["X-ray (jaw)", "Multifocal osteomyelitic changes; 'honeycombing'"], ] story.append(make_table(diag[0], diag[1:], col_widths=[60*mm, 117*mm])) story.append(sp(4)) story.append(sub_section("Treatment")) for t in [bullet("Penicillin G IV – drug of choice (high dose, long duration: 3-6 weeks IV then 3-6 months oral)"), bullet("Amoxicillin oral (alternative)"), bullet("Tetracycline, Erythromycin (if penicillin allergic)"), bullet("Surgical drainage of abscesses"), bullet("Excision of sinus tracts"), bullet("MUST treat for prolonged period to prevent relapse")]: story.append(t) story.append(sp(3)) story.append(examtip("DOC for Actinomycosis = Penicillin G (long course 6-12 months). NOT metronidazole (Actinomyces is Gram-positive)")) story.append(sp(5)) story.append(sub_section("MCQs – Actinomycosis")) act_qs = [ (9, "Sulfur granules in actinomycosis are:", ["A. Deposits of sulfur mineral", "B. Colonies of Actinomyces filaments", "C. Calcium deposits", "D. Dead neutrophils"], "B", "Sulfur granules are macroscopic colonies of Actinomyces filaments – NOT actual sulfur"), (10, "The most common form of actinomycosis is:", ["A. Thoracic", "B. Abdominal", "C. Cervicofacial", "D. Cutaneous"], "C", "Cervicofacial actinomycosis accounts for 50-60% of all cases"), (11, "Splendore-Hoeppli phenomenon in actinomycosis represents:", ["A. Central basophilic colony", "B. Peripheral eosinophilic club-shaped fringe of sulfur granule", "C. Caseous necrosis", "D. Giant cells around granule"], "B", "Splendore-Hoeppli = eosinophilic radiating clubs around the periphery of sulfur granule"), (12, "Drug of choice for actinomycosis:", ["A. Metronidazole", "B. Cotrimoxazole", "C. Penicillin G", "D. Fluconazole"], "C", "Penicillin G is DOC; requires prolonged therapy (months)"), (13, "Actinomyces israelii is best described as:", ["A. Gram-negative, aerobic fungus", "B. Gram-positive, branching, anaerobic bacterium", "C. Acid-fast bacillus", "D. Gram-negative anaerobic rod"], "B", "A. israelii is Gram-positive, filamentous, branching, anaerobic-microaerophilic bacterium (NOT a fungus)"), (14, "Cervicofacial actinomycosis most commonly follows:", ["A. Tonsillitis", "B. Dental extraction or jaw trauma", "C. Viral URTI", "D. Sinusitis"], "B", "Dental extraction, jaw fractures, or oral trauma precipitate cervicofacial actinomycosis"), ] for q in act_qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 4: TUBERCULOSIS OF ORAL CAVITY # ═══════════════════════════════════════════════════════════════ story.append(section_header("4. TUBERCULOSIS OF THE ORAL CAVITY")) story.append(sp(4)) story.append(sub_section("General Points")) for b in [bullet("Caused by Mycobacterium tuberculosis (acid-fast bacillus)"), bullet("Oral TB is almost always secondary to pulmonary TB"), bullet("Primary oral TB is rare (< 5% of oral TB cases)"), bullet("Route of infection: Sputum contamination → mucosal abrasion → implantation"), bullet("Most common intraoral site: Tongue (dorsum/lateral border)"), bullet("Second most common: Lips, palate, gingiva, floor of mouth")]: story.append(b) story.append(sp(3)) story.append(key_point("Oral TB is almost ALWAYS secondary to pulmonary TB; primary oral TB is rare")) story.append(sp(5)) story.append(sub_section("Clinical Features")) tb_cf = [ ["Feature", "Description"], ["Lesion type", "Painless, irregular, indurated ulcer with undermined edges"], ["Surface", "Granular floor, may show yellowish slough"], ["Edges", "Undermined (classic TB ulcer feature)"], ["Tongue", "Most common site; dorsum/lateral border; may show fissuring"], ["Lip", "Painless indurated ulcer; may have satellite nodules"], ["Jaw (TB osteomyelitis)", "Rare; diffuse radiolucency; sequestrum formation"], ["Lymph nodes", "Regional lymphadenopathy (scrofula = cervical TB lymphadenitis)"], ["Systemic", "Weight loss, night sweats, fever, hemoptysis"], ] story.append(make_table(tb_cf[0], tb_cf[1:], col_widths=[50*mm, 127*mm])) story.append(sp(4)) story.append(examtip("TB ulcer = Painless, irregular, indurated with UNDERMINED edges (contrast: syphilitic chancre = painless but firm/indurated without undermining)")) story.append(sp(5)) story.append(sub_section("Histopathology")) for h in [bullet("Epithelioid cell granuloma (key feature)"), bullet("Langhans giant cells (horseshoe-shaped nuclei)"), bullet("Caseous necrosis in center (pathognomonic of TB)"), bullet("Peripheral lymphocytic cuffing"), bullet("AFB (acid-fast bacilli) on Ziehl-Neelsen staining"), bullet("Fibrosis in older lesions")]: story.append(h) story.append(sp(3)) story.append(key_point("TB granuloma: Caseous necrosis + Epithelioid cells + Langhans giant cells + Lymphocytic cuffing")) story.append(sp(3)) story.append(mnemonic("'CELL' – Caseation, Epithelioid cells, Langhans giant cells, Lymphocytes")) story.append(sp(5)) story.append(sub_section("Diagnosis")) for d in [bullet("Mantoux test / Tuberculin skin test (TST)"), bullet("Chest X-ray (look for pulmonary TB)"), bullet("Sputum AFB smear and culture"), bullet("Biopsy of oral lesion – histopathology + ZN stain"), bullet("IGRA (Interferon-Gamma Release Assay)"), bullet("GeneXpert (MTB/RIF assay) – rapid molecular test")]: story.append(d) story.append(sp(5)) story.append(sub_section("MCQs – Oral Tuberculosis")) tb_qs = [ (15, "Most common intraoral site of tuberculosis is:", ["A. Palate", "B. Tongue", "C. Gingiva", "D. Lip"], "B", "Tongue (especially dorsum/lateral border) is the most common oral site for TB ulcers"), (16, "Characteristic histological feature of TB is:", ["A. Abscess formation", "B. Caseous necrosis with Langhans giant cells", "C. Acanthosis", "D. Koilocytes"], "B", "Caseating granuloma with Langhans giant cells is pathognomonic of tuberculosis"), (17, "Oral TB is most commonly:", ["A. Primary", "B. Secondary to pulmonary TB", "C. Secondary to intestinal TB", "D. Idiopathic"], "B", "Oral TB is secondary (sputum contamination) in vast majority of cases"), (18, "Langhans giant cell nuclei arrangement is:", ["A. Diffusely scattered", "B. Central cluster", "C. Horseshoe/peripheral arrangement", "D. Single nucleus"], "C", "Langhans giant cells show nuclei arranged in horseshoe or peripheral pattern (contrast: foreign body giant cells – nuclei scattered randomly)"), ] for q in tb_qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 5: SYPHILIS OF THE ORAL CAVITY # ═══════════════════════════════════════════════════════════════ story.append(section_header("5. SYPHILIS OF THE ORAL CAVITY")) story.append(sp(4)) story.append(Paragraph("Caused by Treponema pallidum | Sexually transmitted | Spirochete", sNote)) story.append(sp(4)) story.append(sub_section("Stages and Oral Manifestations")) syph = [ ["Stage", "Oral Lesion", "Key Features"], ["Primary (1° Syphilis)", "Chancre (primary lesion)", "Single, painless, indurated ulcer; most common on lip; highly infectious; resolves in 3-8 weeks"], ["Secondary (2° Syphilis)", "Mucous patches (snail-track ulcers)", "Multiple, painless, oval, grayish-white patches on mucosa; 'condyloma lata' on moist areas; highly infectious"], ["Tertiary (3° Syphilis)", "Gumma", "Destructive, necrotic, painless granuloma; palate most common oral site; perforation of palate/nasal septum"], ["Congenital Syphilis", "Multiple stigmata (see below)", "Hutchinson's teeth, Mulberry molars, interstitial keratitis (Hutchinson's triad)"], ] story.append(make_table(syph[0], syph[1:], col_widths=[45*mm, 50*mm, 82*mm])) story.append(sp(5)) story.append(sub_section("Congenital Syphilis – Oral Stigmata")) for b in [bullet("Hutchinson's incisors: Screwdriver-shaped, notched permanent upper central incisors (pathognomonic)"), bullet("Mulberry molars (Moon's molars): First permanent molars with multiple small cusps clustered together; domed appearance"), bullet("Hutchinson's Triad: Hutchinson's teeth + Interstitial keratitis + 8th nerve deafness"), bullet("Saddle nose deformity (due to nasal septum destruction)"), bullet("Rhagades: Linear scars at corners of mouth"), bullet("Saber shins, Clutton's joints (bilateral knee effusions)")]: story.append(b) story.append(sp(3)) story.append(key_point("Hutchinson's Triad = Hutchinson's teeth + Interstitial keratitis + Nerve deafness (8th CN)")) story.append(sp(3)) story.append(examtip("Mulberry molar = Pathognomonic of congenital syphilis; Hutchinson's incisors = also called 'peg laterals' or 'screwdriver teeth'")) story.append(sp(5)) story.append(sub_section("Histopathology of Gumma (Tertiary Syphilis)")) for h in [bullet("Central coagulative necrosis (NOT caseation – rubbery/gummatous)"), bullet("Surrounding epithelioid cells and lymphocytes"), bullet("Obliterative endarteritis (hallmark): Plasma cell-rich perivascular inflammation around vessels"), bullet("Plasma cells VERY prominent (syphilis = plasma cell disease)"), bullet("Treponema pallidum on Warthin-Starry silver stain or dark-field microscopy")]: story.append(h) story.append(sp(3)) story.append(key_point("Syphilis histology hallmark = Obliterative endarteritis + Plasma cell-rich infiltrate")) story.append(sp(3)) story.append(mnemonic("'Syphilis = PALE' – Plasma cells, Endarteritis (obliterative), Lymphocytes, Epithelioid cells")) story.append(sp(5)) story.append(sub_section("MCQs – Oral Syphilis")) syph_qs = [ (19, "Most common oral site for tertiary syphilis (gumma) is:", ["A. Tongue", "B. Palate", "C. Gingiva", "D. Floor of mouth"], "B", "Palate is the most common site of gumma in the oral cavity; perforation of palate is classic"), (20, "Hutchinson's triad consists of:", ["A. Hutchinson's teeth + Interstitial keratitis + 8th nerve deafness", "B. Hutchinson's teeth + Saddle nose + Rhagades", "C. Mulberry molar + Keratitis + Hepatitis", "D. Chancre + Mucous patches + Gumma"], "A", "Hutchinson's triad = Hutchinson's teeth + Interstitial keratitis + 8th (auditory) nerve deafness"), (21, "Mulberry molar is associated with:", ["A. Rickets", "B. Congenital syphilis", "C. Fluorosis", "D. Amelogenesis imperfecta"], "B", "Mulberry (Moon's) molar is pathognomonic of congenital syphilis"), (22, "Characteristic histological feature of syphilis is:", ["A. Caseating granuloma", "B. Sulfur granules", "C. Obliterative endarteritis with plasma cell infiltrate", "D. Koilocytes"], "C", "Obliterative endarteritis with rich plasma cell infiltrate is the hallmark of syphilitic lesions"), (23, "'Snail-track ulcers' of mouth occur in which stage of syphilis?", ["A. Primary", "B. Secondary", "C. Tertiary", "D. Congenital"], "B", "Secondary syphilis – mucous patches (snail-track ulcers) are multiple, gray, highly infectious oral lesions"), ] for q in syph_qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 6: OSTEOMYELITIS OF THE JAWS # ═══════════════════════════════════════════════════════════════ story.append(section_header("6. OSTEOMYELITIS OF THE JAWS")) story.append(sp(4)) story.append(sub_section("Acute Osteomyelitis")) ao = [ ["Feature", "Description"], ["Definition", "Acute suppurative infection of bone marrow and cortex"], ["Most common jaw", "Mandible (blood supply is end-arterial; maxilla has rich collateral supply)"], ["Causative organisms", "Staphylococcus aureus (most common overall); Streptococcus; anaerobes (dental origin)"], ["Source", "Dental infections (most common), fractures, blood-borne (hematogenous)"], ["Symptoms", "Severe pain, swelling, fever, trismus, lymphadenopathy"], ["Paresthesia", "Vincent's sign – lower lip paresthesia (inferior alveolar nerve involvement)"], ["X-ray (early)", "Normal (changes appear after 7-10 days when 30-50% bone mineral lost)"], ["X-ray (late)", "Moth-eaten radiolucency; sequestrum (dead bone – radiopaque) + involucrum (reactive bone)"], ] story.append(make_table(ao[0], ao[1:], col_widths=[50*mm, 127*mm])) story.append(sp(4)) story.append(key_point("Vincent's sign = Numbness of lower lip = Inferior alveolar nerve involvement in mandibular osteomyelitis")) story.append(sp(3)) story.append(key_point("Mandible >> Maxilla in osteomyelitis because maxilla has rich anastomotic blood supply")) story.append(sp(5)) story.append(sub_section("Chronic Osteomyelitis")) for b in [bullet("Results from inadequately treated acute osteomyelitis"), bullet("Types: Suppurative (pus-forming) and Non-suppurative (sclerosing)"), bullet("Garre's osteomyelitis (Chronic sclerosing osteomyelitis with proliferative periostitis):"), bullet(" - Children and young adults; mandible (submandibular region)", ), bullet(" - Focal cortical bone expansion; 'onion skin' periosteal reaction on X-ray"), bullet(" - NOT associated with pus; caused by low-grade infection"), bullet("Diffuse sclerosing osteomyelitis: Adults; mandible; chronic pain, sclerosis")]: story.append(b) story.append(sp(3)) story.append(key_point("Garre's Osteomyelitis = Chronic sclerosing osteomyelitis + Proliferative periostitis + 'Onion skin' X-ray pattern")) story.append(sp(3)) story.append(examtip("Histopathology of Garre's: Dense reactive bone (woven bone trabeculae) with minimal inflammation – NO pus")) story.append(sp(5)) story.append(sub_section("Sequestrum vs Involucrum")) seq = [ ["Term", "Definition", "X-ray appearance"], ["Sequestrum", "Dead, avascular piece of bone", "Radiopaque fragment (denser than surrounding bone)"], ["Involucrum", "New periosteal bone formed around sequestrum", "Radiopaque shell of reactive bone"], ["Cloaca", "Opening in involucrum for pus drainage", "Radiolucent defect in involucrum"], ["Brodie's abscess", "Subacute/chronic localized intraosseous abscess", "Radiolucent with sclerotic rim"], ] story.append(make_table(seq[0], seq[1:], col_widths=[40*mm, 80*mm, 57*mm])) story.append(sp(5)) story.append(sub_section("MCQs – Osteomyelitis")) osteo_qs = [ (24, "Most common jaw affected in osteomyelitis is:", ["A. Maxilla", "B. Mandible", "C. Equal in both", "D. Zygoma"], "B", "Mandible is affected more due to end-arterial blood supply (less collateral circulation vs maxilla)"), (25, "Vincent's sign in osteomyelitis refers to:", ["A. Trismus", "B. Lower lip paresthesia", "C. Facial swelling", "D. Tooth mobility"], "B", "Vincent's sign = Numbness/paresthesia of lower lip due to inferior alveolar nerve involvement"), (26, "Garre's osteomyelitis is characterized by:", ["A. Suppurative infection with pus discharge", "B. Onion-skin periosteal reaction without pus", "C. Caseating granuloma", "D. Sulfur granules"], "B", "Garre's = Proliferative periostitis with onion-skin periosteal reaction; no pus; chronic sclerosing type"), (27, "The earliest X-ray change in acute osteomyelitis appears after:", ["A. 24 hours", "B. 3-5 days", "C. 7-10 days (when 30-50% bone is destroyed)", "D. 4-6 weeks"], "C", "X-ray changes in osteomyelitis appear only after 7-10 days when significant bone destruction (30-50%) has occurred"), ] for q in osteo_qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 7: SCARLET FEVER / SCARLATINA # ═══════════════════════════════════════════════════════════════ story.append(section_header("7. SCARLET FEVER (ORAL MANIFESTATIONS)")) story.append(sp(4)) story.append(sub_section("Key Facts")) for b in [bullet("Caused by: Group A beta-hemolytic Streptococcus (Streptococcus pyogenes)"), bullet("Mechanism: Pyrogenic exotoxin (erythrogenic toxin) of S. pyogenes"), bullet("Age: Children 2-10 years"), bullet("Transmission: Droplet, direct contact"), bullet("Erythrogenic toxins: Types A, B, C (Type A most common)")]: story.append(b) story.append(sp(5)) story.append(sub_section("Oral/Tongue Changes – HIGH YIELD")) sc = [ ["Stage", "Tongue Appearance"], ["Early (1-2 days)", "White strawberry tongue: White fur with enlarged red papillae projecting through ('white strawberry')"], ["Later (day 4-5)", "Red strawberry tongue (raspberry tongue): White coat desquamates, leaving bright red tongue with prominent papillae"], ["Throat", "Bright red pharynx, tonsillar exudate"], ["Palate", "Petechiae on soft palate (Forchheimer spots)"], ["Skin", "Diffuse red scarlatiniform rash (sandpaper feel); circumoral pallor (Filatov sign)"], ["Pastia's lines", "Linear petechiae in antecubital fossa and inguinal folds"], ] story.append(make_table(sc[0], sc[1:], col_widths=[40*mm, 137*mm])) story.append(sp(4)) story.append(key_point("White Strawberry Tongue → Red/Raspberry Tongue: Classic progression in Scarlet Fever")) story.append(sp(3)) story.append(examtip("Strawberry tongue also seen in: Kawasaki disease, TSS (toxic shock syndrome) – must differentiate from Scarlet Fever clinically")) story.append(sp(5)) story.append(sub_section("MCQs – Scarlet Fever")) for elem in mcq(28, "Strawberry tongue is seen in all of the following EXCEPT:", ["A. Scarlet fever", "B. Kawasaki disease", "C. Toxic shock syndrome", "D. Typhoid fever"], "D", "Strawberry tongue occurs in Scarlet fever, Kawasaki disease, TSS – NOT in Typhoid (rose spots on abdomen)"): story.append(elem) for elem in mcq(29, "Causative organism of Scarlet fever is:", ["A. Staphylococcus aureus", "B. Group A beta-hemolytic Streptococcus (S. pyogenes)", "C. Streptococcus pneumoniae", "D. Corynebacterium diphtheriae"], "B", "Scarlet fever is caused by Group A beta-hemolytic Streptococcus (S. pyogenes) producing erythrogenic toxin"): story.append(elem) for elem in mcq(30, "White strawberry tongue changes to red strawberry tongue in scarlet fever by day:", ["A. 1-2", "B. 3-4", "C. 4-5", "D. 7-10"], "C", "White coating desquamates by day 4-5, revealing the classic red/raspberry strawberry tongue"): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 8: LUDWIG'S ANGINA # ═══════════════════════════════════════════════════════════════ story.append(section_header("8. LUDWIG'S ANGINA")) story.append(sp(4)) story.append(sub_section("Definition & Key Facts")) for b in [bullet("Rapidly spreading, bilateral, gangrenous cellulitis involving submandibular, sublingual, and submental spaces"), bullet("NOT a true abscess (no pus localization); gangrenous cellulitis"), bullet("Named after: Wilhelm Friedrich von Ludwig (1836)"), bullet("Source: 80-90% odontogenic – mandibular second/third molar infections (most common)"), bullet("Organisms: Polymicrobial – Streptococcus (α and β-hemolytic), anaerobes (Bacteroides, Fusobacterium, Peptostreptococcus)"), bullet("Life-threatening: Airway compromise is the main cause of death")]: story.append(b) story.append(sp(3)) story.append(key_point("Ludwig's Angina = Bilateral submandibular/sublingual/submental space cellulitis; NOT a true abscess; airway = #1 concern")) story.append(sp(3)) story.append(examtip("Ludwig's = Bilateral (KEY word). If unilateral → parapharyngeal/peritonsillar abscess, NOT Ludwig's")) story.append(sp(5)) story.append(sub_section("Clinical Features")) lud = [ ["Feature", "Description"], ["Swelling", "Brawny (hard, wooden), bilateral submandibular swelling"], ["Tongue", "Elevated, pushed posteriorly (risk of airway occlusion)"], ["Trismus", "Present (pterygoid muscle involvement)"], ["Dysphagia/drooling", "Dysphagia, drooling, dysphonia ('hot potato' voice)"], ["Skin", "Tense, shiny, reddish-brown discoloration; crepitus (gas-forming organisms)"], ["Airway", "Progressive stridor → EMERGENCY (endotracheal intubation/tracheotomy)"], ["Systemic", "Fever, tachycardia, sepsis"], ] story.append(make_table(lud[0], lud[1:], col_widths=[45*mm, 132*mm])) story.append(sp(4)) story.append(key_point("MOST DANGEROUS complication of Ludwig's Angina = Airway obstruction → Asphyxia (main cause of death)")) story.append(sp(5)) story.append(sub_section("Treatment")) for t in [bullet("IMMEDIATE airway management (awake fiberoptic intubation, tracheotomy if needed)"), bullet("IV antibiotics: High-dose Penicillin G + Metronidazole (or Clindamycin)"), bullet("Surgical drainage: Wide incision and drainage of all involved spaces"), bullet("High-dose corticosteroids (controversial – to reduce edema)"), bullet("ICU admission, oxygen therapy"), bullet("Treat underlying dental cause after stabilization")]: story.append(t) story.append(sp(5)) story.append(sub_section("MCQs – Ludwig's Angina")) lud_qs = [ (31, "Ludwig's angina involves all of the following spaces EXCEPT:", ["A. Submandibular space", "B. Sublingual space", "C. Submental space", "D. Parapharyngeal space"], "D", "Ludwig's angina classically involves submandibular + sublingual + submental spaces (bilateral); parapharyngeal is separate"), (32, "The most common source of Ludwig's angina is:", ["A. Maxillary molar abscess", "B. Mandibular 2nd/3rd molar infection", "C. Submandibular salivary gland", "D. Peritonsillar abscess"], "B", "80-90% of Ludwig's angina arises from mandibular posterior tooth (2nd/3rd molar) infections"), (33, "The most life-threatening complication of Ludwig's angina is:", ["A. Septicemia", "B. Mediastinitis", "C. Airway obstruction", "D. Cavernous sinus thrombosis"], "C", "Airway obstruction from elevated/displaced tongue is the primary cause of death in Ludwig's angina"), (34, "Ludwig's angina is best described as:", ["A. Unilateral submandibular abscess", "B. Bilateral gangrenous cellulitis of submandibular/sublingual/submental spaces", "C. Parapharyngeal abscess", "D. Peritonsillar cellulitis"], "B", "Ludwig's = BILATERAL gangrenous cellulitis of 3 spaces – not a true abscess"), ] for q in lud_qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 9: LEPROSY (ORAL) # ═══════════════════════════════════════════════════════════════ story.append(section_header("9. LEPROSY – ORAL MANIFESTATIONS")) story.append(sp(4)) story.append(sub_section("Key Facts")) for b in [bullet("Caused by: Mycobacterium leprae (acid-fast bacillus)"), bullet("Transmission: Prolonged close contact; respiratory droplets"), bullet("Incubation period: 2-10 years (longest of all bacterial diseases)"), bullet("Cannot be cultured in vitro (grown in armadillo footpads or nude mice)"), bullet("Ridley-Jopling classification: TT → BT → BB → BL → LL (tuberculoid to lepromatous)")]: story.append(b) story.append(sp(5)) story.append(sub_section("Oral Manifestations")) lep = [ ["Type", "Oral Features"], ["Lepromatous leprosy (LL)", "Nodules on palate, tongue, lips; nasal septal perforation; saddle nose deformity"], ["Tuberculoid (TT)", "Oral lesions rare; well-defined granulomas if present"], ["Both types", "Anterior alveolar bone atrophy; loss of anterior teeth; periapical granulomas"], ["Hard palate", "Perforation (like tertiary syphilis – must differentiate)"], ["Tongue", "Nodules (leproma), macroglossia possible in lepromatous type"], ] story.append(make_table(lep[0], lep[1:], col_widths=[50*mm, 127*mm])) story.append(sp(4)) story.append(examtip("Saddle nose + Palatal perforation = both Leprosy AND Tertiary Syphilis; differentiate by histology and serology")) story.append(sp(5)) story.append(sub_section("Histopathology")) for h in [bullet("Lepromatous: Foamy macrophages (Virchow cells/lepra cells) filled with M. leprae (Globi = clusters)"), bullet("Tuberculoid: Well-formed epithelioid granuloma with Langhans giant cells; few bacilli"), bullet("Fite-Faraco stain for M. leprae (modified AFB stain)"), bullet("Lepromatous: Abundant bacilli; poor cell-mediated immunity"), bullet("Tuberculoid: Rare bacilli; strong cell-mediated immunity")]: story.append(h) story.append(sp(3)) story.append(key_point("Virchow cells (lepra cells) = Foamy macrophages stuffed with M. leprae → seen in lepromatous leprosy")) story.append(sp(5)) story.append(sub_section("MCQs – Leprosy")) for elem in mcq(35, "Foamy macrophages (Virchow cells) stuffed with Mycobacterium leprae are seen in:", ["A. Tuberculoid leprosy", "B. Lepromatous leprosy", "C. Borderline leprosy", "D. Indeterminate leprosy"], "B", "Lepromatous leprosy shows Virchow cells (foamy macrophages) filled with M. leprae (globi); poor CMI"): story.append(elem) for elem in mcq(36, "Mycobacterium leprae cannot be grown in:", ["A. Armadillo footpads", "B. Nude mice", "C. Standard laboratory culture media", "D. A and B"], "C", "M. leprae cannot be cultured in vitro on any laboratory media; grown in armadillo footpads or nude mice"): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 10: COMPARATIVE HIGH-YIELD TABLES # ═══════════════════════════════════════════════════════════════ story.append(section_header("10. HIGH-YIELD COMPARATIVE TABLES FOR NEET MDS")) story.append(sp(5)) story.append(sub_section("Table A: DOC (Drug of Choice) Summary")) doc_tbl = [ ["Disease", "Drug of Choice", "Alternative"], ["ANUG", "Metronidazole", "Penicillin V"], ["Actinomycosis", "Penicillin G (long course)", "Tetracycline, Amoxicillin"], ["Tuberculosis (oral)", "Rifampicin + INH + PZA + Ethambutol (HRZE)", "As per ATT regimen"], ["Syphilis", "Benzathine Penicillin G", "Doxycycline (penicillin allergy)"], ["Ludwig's Angina", "Penicillin G + Metronidazole IV", "Clindamycin"], ["Osteomyelitis (acute)", "Penicillin G IV (staph → Nafcillin/Oxacillin)", "Clindamycin"], ["Scarlet Fever", "Penicillin V (oral)", "Amoxicillin, Erythromycin"], ["Leprosy (PB)", "Rifampicin + Dapsone (6 months)", "WHO MDT regimen"], ["Leprosy (MB)", "Rifampicin + Clofazimine + Dapsone (12 months)", "WHO MDT regimen"], ] story.append(make_table(doc_tbl[0], doc_tbl[1:], col_widths=[55*mm, 72*mm, 50*mm])) story.append(sp(8)) story.append(sub_section("Table B: Causative Organisms Quick Reference")) org_tbl = [ ["Disease", "Primary Organism", "Type"], ["ANUG", "Fusobacterium nucleatum + Treponema vincentii", "Fusospirochetal complex"], ["Noma", "Fusobacterium necrophorum", "Gram-negative anaerobe"], ["Actinomycosis", "Actinomyces israelii", "Gram-positive anaerobic filament"], ["TB (oral)", "Mycobacterium tuberculosis", "Acid-fast bacillus"], ["Syphilis", "Treponema pallidum", "Spirochete"], ["Ludwig's Angina", "Polymicrobial (Streptococcus + anaerobes)", "Mixed oral flora"], ["Scarlet Fever", "Streptococcus pyogenes (Group A)", "Gram-positive cocci"], ["Leprosy", "Mycobacterium leprae", "Acid-fast bacillus"], ["Osteomyelitis", "Staphylococcus aureus (most common)", "Gram-positive cocci"], ] story.append(make_table(org_tbl[0], org_tbl[1:], col_widths=[50*mm, 80*mm, 47*mm])) story.append(sp(8)) story.append(sub_section("Table C: Pathognomonic/Characteristic Features")) path_tbl = [ ["Disease", "Pathognomonic Feature"], ["ANUG", "Punched-out/cratered interdental papillae with grey pseudomembrane"], ["Actinomycosis", "Sulfur granules in pus (with Splendore-Hoeppli eosinophilic clubs)"], ["TB", "Caseous necrosis + Langhans giant cells (horseshoe nuclei)"], ["Syphilis (all stages)", "Obliterative endarteritis + Plasma cell infiltrate"], ["Congenital Syphilis", "Hutchinson's triad (teeth + keratitis + deafness)"], ["Lepromatous Leprosy", "Virchow cells (foamy macrophages with M. leprae globi)"], ["Garre's Osteomyelitis", "Onion-skin periosteal reaction (no pus)"], ["Ludwig's Angina", "Bilateral brawny submandibular/sublingual swelling + elevated tongue"], ["Noma", "Gangrene of face; black eschar; starting as ANUG complication"], ["Scarlet Fever", "White → Red strawberry tongue; sandpaper rash"], ] story.append(make_table(path_tbl[0], path_tbl[1:], col_widths=[55*mm, 122*mm])) story.append(sp(8)) story.append(sub_section("Table D: Histological Stains Used")) stain_tbl = [ ["Disease/Organism", "Stain Used", "Finding"], ["Actinomyces israelii", "Gram stain", "Gram-positive branching filaments"], ["Mycobacterium tuberculosis", "Ziehl-Neelsen (ZN)", "Red AFB on blue background"], ["Treponema pallidum", "Warthin-Starry silver stain", "Black spirochetes"], ["Mycobacterium leprae", "Fite-Faraco (modified AFB)", "Acid-fast bacilli in foamy macrophages"], ["Actinomyces colonies", "H&E", "Basophilic center + eosinophilic clubs (Splendore-Hoeppli)"], ["Fungi (differential)", "PAS, GMS (Gomori-Methenamine Silver)", "Fungal hyphae/spores"], ] story.append(make_table(stain_tbl[0], stain_tbl[1:], col_widths=[55*mm, 60*mm, 62*mm])) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 11: GRAND MCQ SET (MIXED QUESTIONS) # ═══════════════════════════════════════════════════════════════ story.append(section_header("11. GRAND MCQ SET – MIXED PRACTICE (NEET MDS Level)")) story.append(sp(5)) grand_qs = [ (37, "All of the following are features of ANUG EXCEPT:", ["A. Punched-out interdental papillae", "B. Fetid odor", "C. Indurated painless ulcer", "D. Spontaneous gingival bleeding"], "C", "Indurated painless ulcer is characteristic of syphilitic chancre or TB ulcer, NOT ANUG (ANUG is painful)"), (38, "Which of the following bacteria is acid-fast?", ["A. Fusobacterium nucleatum", "B. Actinomyces israelii", "C. Mycobacterium tuberculosis", "D. Treponema pallidum"], "C", "Mycobacterium tuberculosis is acid-fast (along with M. leprae and Nocardia partially)"), (39, "Sulfur granules differentiate actinomycosis from all EXCEPT:", ["A. Nocardiosis", "B. Botryomycosis (also shows granules)", "C. Tuberculosis", "D. Candidiasis"], "B", "Botryomycosis can also show 'grains' (bacterial aggregates) resembling sulfur granules – both may cause confusion"), (40, "Obliterative endarteritis is the hallmark of:", ["A. Tuberculosis", "B. Actinomycosis", "C. Syphilis", "D. ANUG"], "C", "Obliterative endarteritis with perivascular plasma cell infiltrate is the hallmark histological feature of syphilis"), (41, "A child presents with fever, sandpaper rash, and the tongue shown (initially white then turning red). Diagnosis is:", ["A. Kawasaki disease", "B. Scarlet fever", "C. Stevens-Johnson syndrome", "D. Hand foot mouth disease"], "B", "Scarlet fever: Group A Strep, erythrogenic toxin, sandpaper rash, strawberry tongue, circumoral pallor"), (42, "Noma (cancrum oris) is most likely a complication of:", ["A. Untreated dental caries", "B. ANUG in malnourished children", "C. Actinomycosis", "D. Herpetic stomatitis"], "B", "Noma is the most severe end of necrotizing periodontal disease – starts as ANUG, progresses in malnourished/immunocompromised children"), (43, "A 40-year-old man has a painless hard swelling at angle of mandible with multiple discharging sinuses containing yellow granules. Diagnosis:", ["A. Osteosarcoma", "B. Cervicofacial actinomycosis", "C. Ludwig's angina", "D. Ameloblastoma"], "B", "Classic presentation of cervicofacial actinomycosis: woody hard jaw swelling + multiple sinuses + sulfur granules"), (44, "In osteomyelitis, the term 'involucrum' refers to:", ["A. Dead avascular bone fragment", "B. Opening in periosteal new bone", "C. New periosteal bone formed around sequestrum", "D. Intraosseous abscess"], "C", "Involucrum = New reactive periosteal bone formed around the dead sequestrum in osteomyelitis"), (45, "Which of the following has the longest incubation period among bacterial diseases?", ["A. TB", "B. Syphilis", "C. Leprosy", "D. Actinomycosis"], "C", "Leprosy has the longest incubation period: 2-10 years (some say up to 20 years in lepromatous type)"), (46, "Screwdriver-shaped notched incisors are seen in:", ["A. Rickets", "B. Fluorosis", "C. Congenital syphilis", "D. Amelogenesis imperfecta"], "C", "Hutchinson's incisors (screwdriver-shaped, notched at incisal edge) are pathognomonic of congenital syphilis"), (47, "Which space is NOT involved in Ludwig's angina?", ["A. Sublingual", "B. Submandibular", "C. Submental", "D. Retropharyngeal"], "D", "Ludwig's angina involves submandibular + sublingual + submental spaces (bilateral); retropharyngeal is a separate space infection"), (48, "A chronic jaw swelling with 'onion-skin' periosteal reaction on X-ray in a child suggests:", ["A. Ewing's sarcoma", "B. Garre's osteomyelitis", "C. Osteogenic sarcoma", "D. Cherubism"], "B", "Garre's osteomyelitis (chronic sclerosing with proliferative periostitis) shows classic onion-skin periosteal layering (also seen in Ewing's – differentiate by biopsy)"), (49, "Ziehl-Neelsen (ZN) stain is used to identify:", ["A. Spirochetes", "B. Acid-fast bacilli (Mycobacterium)", "C. Gram-positive cocci", "D. Actinomyces filaments"], "B", "ZN stain uses carbol fuchsin (heat fixed) to stain acid-fast bacilli red – used for Mycobacterium TB and M. leprae"), (50, "Which organism is a Gram-positive, filamentous, anaerobic bacterium that is a normal commensal of the oral cavity?", ["A. Fusobacterium nucleatum", "B. Treponema pallidum", "C. Actinomyces israelii", "D. Mycobacterium tuberculosis"], "C", "Actinomyces israelii is Gram-positive, branching, anaerobic – normal commensal of oral cavity causing endogenous infection after trauma"), ] for q in grand_qs: for elem in mcq(*q): story.append(elem) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════ # SECTION 12: MEMORY AIDS # ═══════════════════════════════════════════════════════════════ story.append(section_header("12. MEMORY AIDS & MNEMONICS")) story.append(sp(5)) mnemonics = [ ("ANUG Organisms", "Fuso + Treponema = FUSOSPIROCHETAL (F+T for ANUG)"), ("Actinomycosis treatment", "PENICILLIN PROLONGS PATHWAYS – always use Penicillin for long duration"), ("Syphilis stages oral", "C-M-G: Chancre (1°), Mucous patches (2°), Gumma (3°)"), ("Hutchinson's Triad", "TKD: Teeth (Hutchinson's) + Keratitis (interstitial) + Deafness (8th nerve)"), ("Ludwig's spaces", "3S: Submandibular + Sublingual + Submental (all Bilateral)"), ("TB granuloma = 'CELL'", "Caseation + Epithelioid cells + Langhans giants + Lymphocytes"), ("Garre's vs Ewing's", "Both onion-skin – Garre's is BENIGN chronic infection; Ewing's is MALIGNANT tumor (biopsy differentiates)"), ("Lepromatous vs Tuberculoid", "LL = Lots of bacilli, Low immunity; TT = Tiny bacilli, Tough immunity"), ("DOC memory", "Metronidazole for ANUG (M for M); Penicillin for Actinomycosis, Syphilis, Ludwig's, Scarlet fever"), ("Noma vs ANUG", "ANUG stays in gingiva; NOMA goes to FACE (gangrenous, fatal in children)"), ] for title, text in mnemonics: story.append(Paragraph(f"<b>{title}:</b> {text}", S("mn", fontSize=9, fontName="Helvetica", textColor=DARK_BLUE, leading=14, spaceAfter=2, leftIndent=8, backColor=colors.HexColor("#f0f9ff"), borderPadding=(3,6,3,6)))) story.append(sp(3)) story.append(sp(8)) # ─── Footer note ───────────────────────────────────────────────────────────── footer_data = [[Paragraph( "These notes are compiled for NEET MDS preparation based on Shafer's Textbook of Oral Pathology. " "All high-yield facts have been verified against standard oral pathology references. " "For clinical practice, always refer to current evidence-based guidelines.", S("fn", fontSize=8, fontName="Helvetica-Oblique", textColor=colors.HexColor("#64748b"), alignment=TA_CENTER, leading=12))]] ft = Table(footer_data, colWidths=[W - 40*mm]) ft.setStyle(TableStyle([ ("BACKGROUND", (0,0), (-1,-1), GREY_LIGHT), ("TOPPADDING", (0,0), (-1,-1), 8), ("BOTTOMPADDING", (0,0), (-1,-1), 8), ("LEFTPADDING", (0,0), (-1,-1), 10), ("RIGHTPADDING", (0,0), (-1,-1), 10), ("LINEABOVE", (0,0), (-1,-1), 1, MED_BLUE), ])) story.append(ft) # ── Build ───────────────────────────────────────────────────────────────────── def add_page_number(canvas, doc): canvas.saveState() canvas.setFont("Helvetica", 8) canvas.setFillColor(colors.HexColor("#64748b")) canvas.drawString(20*mm, 12*mm, "Bacterial Infections of Oral Cavity | NEET MDS Oral Pathology Notes") canvas.drawRightString(W - 20*mm, 12*mm, f"Page {doc.page}") canvas.restoreState() doc.build(story, onFirstPage=add_page_number, onLaterPages=add_page_number) print("PDF generated:", OUTPUT) PYEOF echo "Script written successfully"

cd /home/daytona/workspace/oral-path-notes && python3 generate_pdf.py 2>&1

ls -lh /home/daytona/workspace/oral-path-notes/Bacterial_Infections_Oral_Cavity_NEET_MDS.pdf