Medical education flowchart for MBBS university exam on RISK FACTORS of Carcinoma Breast. Clean professional medical diagram with the following structure: Title at top: "RISK FACTORS OF CARCINOMA BREAST" in bold red banner Organized into 5 color-coded boxes arranged around a central breast cancer icon: Box 1 - HORMONAL (Pink): Early menarche (before 11 yrs), Late menopause (after 55 yrs), Nulliparity, First pregnancy after 30 yrs, No breastfeeding, Exogenous HRT/OCP use, Prolonged estrogen exposure Box 2 - GENETIC (Purple): BRCA1 mutation (chr 17q) - 12% hereditary, BRCA2 mutation (chr 13q), TP53 mutation (Li-Fraumeni), PALB2 gene, Family history (1st degree relative), 1 in 8 lifetime risk Box 3 - DEMOGRAPHIC/LIFESTYLE (Blue): Age >50 yrs (75% cases), Female sex, Obesity (post-menopausal), Alcohol consumption, Smoking, High-fat low-fiber diet, Physical inactivity Box 4 - RADIATION (Orange): Chest wall radiation before age 30, Prior breast irradiation Box 5 - HISTOLOGIC RISK (Green): Fibrocystic disease with atypia (RR 3.7-4.2), LCIS (RR >7), Dense breasts, ADH (Atypical Ductal Hyperplasia) At bottom: Key note box: "30% of post-menopausal breast cancers are due to MODIFIABLE risk factors" Clean white background, medical textbook style, color coded sections, arrows showing progression to central cancer node

Medical education flowchart for MBBS university exam: ETIOPATHOGENESIS OF CARCINOMA BREAST. Clean professional medical diagram. Title: "ETIOPATHOGENESIS OF CARCINOMA BREAST" in bold dark blue banner Main flow diagram with arrows showing progression: STEP 1 - INITIATING EVENTS box (Red): - Hormonal stimulation (estrogen): promotes cell proliferation - Genetic mutations: BRCA1, BRCA2, TP53, PALB2 - Radiation, carcinogens - Sporadic somatic mutations STEP 2 - MOLECULAR PATHWAYS box (Orange) with branching: → Path A: LUMINAL (ER+/PR+): Estrogen drives proliferation → PIK3CA mutations → ER-positive invasive carcinoma → Path B: HER2+: HER2 gene amplification (chr 17q12) → overexpression of HER2 receptor → aggressive phenotype → Path C: TRIPLE NEGATIVE (TNBC): BRCA1 silencing + TP53 mutation → loss of DNA repair → basal-like phenotype STEP 3 - PRECURSOR LESIONS box (Yellow): - DCIS (Ductal Carcinoma In Situ) → Invasive Ductal Carcinoma (same breast) - LCIS (Lobular Carcinoma In Situ) → marker of risk (bilateral risk) - ADH → DCIS → Invasive STEP 4 - INVASIVE CARCINOMA box (Dark Red): IDC (75%) → Desmoplastic stroma → Hard fixed mass STEP 5 - SPREAD box (Black): Local → Regional (axillary LN) → Distant metastasis (bone, lung, liver, brain) Clean arrows connecting each step, color gradient from top to bottom, white background, medical textbook professional style, MBBS exam ready

Medical education flowchart for MBBS university exam: HISTOLOGICAL TYPES OF CARCINOMA BREAST. Professional medical classification diagram. Title: "CLASSIFICATION OF BREAST CARCINOMA" in bold navy blue banner Main split into TWO major branches from center: BRANCH A - NON-INVASIVE / IN SITU (Yellow-Green box): Sub-branch 1: DCIS (Ductal Carcinoma In Situ) - Comedo type: central necrosis, calcifications (most aggressive DCIS) - Cribriform type: sieve-like pattern - Micropapillary type - Solid type Note: Precursor to IDC, found on mammography as microcalcifications Sub-branch 2: LCIS (Lobular Carcinoma In Situ) - Marker of risk, not obligate precursor - Bilateral risk - E-cadherin NEGATIVE - Signet ring cells, discohesive BRANCH B - INVASIVE / INFILTRATING (Red box): Sub-branch 1: IDC - No Special Type (NST) (75%) - Most common, hard gritty mass, desmoplastic stroma - Grades 1-2-3 by Nottingham Score Sub-branch 2: SPECIAL TYPES: - Invasive Lobular Carcinoma (ILC): 10-15%, single file pattern, bilateral, E-cadherin negative, signet ring cells - Medullary Carcinoma: soft fleshy mass, syncytial growth, lymphocytic infiltrate, better prognosis - Colloid/Mucinous Carcinoma: abundant extracellular mucin, well-defined, better prognosis - Tubular Carcinoma: excellent prognosis, angulated tubules - Inflammatory Carcinoma: dermal lymphatic invasion, peau d'orange, worst prognosis - Paget's Disease of Nipple: intraepidermal spread, eczematoid nipple Box at bottom: "MOLECULAR SUBTYPES: Luminal A (ER+/PR+/HER2-) | Luminal B (ER+/HER2+) | HER2-enriched | Triple Negative (TNBC)" Clean professional medical diagram, color coded branches, white background, MBBS exam ready

Medical education flowchart for MBBS university exam: PROGNOSTIC FACTORS OF CARCINOMA BREAST. Professional medical diagram. Title: "PROGNOSTIC FACTORS OF INVASIVE BREAST CARCINOMA" in bold dark green banner with subtitle "Nottingham Prognostic Index based" Organized as a two-column table-style diagram with FACTOR on left and SIGNIFICANCE on right: Section 1 - MOST IMPORTANT (Red border, labeled #1): Axillary Lymph Node Status: - No nodes: 70-80% 10-yr survival - 1-3 nodes positive: 35-40% 10-yr survival - >10 nodes positive: 10-15% 10-yr survival Section 2 - TUMOR CHARACTERISTICS (Orange border): - Tumor Size: T1 (<2cm) - best prognosis; T2 (2-5cm); T3 (>5cm) - worst - Histological Grade (Nottingham Score): Grade 1 (well diff) best; Grade 3 (poorly diff) worst - Scored on: Tubule formation + Nuclear pleomorphism + Mitotic rate - Histological Type: Tubular/Mucinous = excellent; IDC = intermediate; Inflammatory = worst Section 3 - MOLECULAR/BIOMARKER FACTORS (Purple border): - ER/PR status: Positive = better prognosis, responds to tamoxifen/aromatase inhibitors - HER2/neu: Overexpression = POOR prognosis, treated with Trastuzumab - Ki67 index: <14% low proliferation (good); >14% high (poor) - Triple Negative (ER-/PR-/HER2-): Worst prognosis, chemotherapy only Section 4 - OTHER FACTORS (Blue border): - Lymphovascular invasion: Present = poor prognosis - Distant metastasis: Bone (most common), Lung, Liver, Brain - Tumor infiltrating lymphocytes (TILs): High TILs = better response - Age: Young patients = worse prognosis Bottom summary box: "NOTTINGHAM PROGNOSTIC INDEX = 0.2×size + LN grade + tumor grade → Score <3.4 = excellent, >5.4 = poor" Clean professional medical flowchart, color coded sections, white background, MBBS exam ready

Medical education diagram for MBBS university exam: PATHOLOGY OF INFILTRATING DUCTAL CARCINOMA (IDC) of Breast. Detailed gross and microscopic pathology diagram. Title: "PATHOLOGY OF INFILTRATING DUCTAL CARCINOMA (IDC / NST)" in bold red banner Divided into clear labeled sections: SECTION 1 - GROSS PATHOLOGY (Blue-grey box): → Size: usually 2-3 cm at presentation → Location: Upper outer quadrant (most common - 50%) → Consistency: HARD, STONY, GRITTY texture (like cutting an unripe pear) → Cut surface: Grey-white, chalky white streaks of desmoplastic stroma, irregular stellate margins → Calcification foci: Chalky white deposits (seen on mammogram) → Skin changes: Dimpling (skin tethering), Peau d'orange (lymphatic blockage), Nipple retraction → Fixation: Fixed to pectoralis muscle and skin in advanced cases SECTION 2 - MICROSCOPIC PATHOLOGY (Pink box): → Architecture: Irregular nests, cords, sheets, trabeculae of malignant ductal cells invading stroma → No gland formation in poorly differentiated tumors → Desmoplastic stromal reaction: Dense fibrous stroma surrounding tumor cells (hallmark) → Nuclear features: Pleomorphic nuclei, prominent nucleoli, hyperchromatic → Mitotic figures: Variable, more in high grade → Calcifications: Psammoma-like or amorphous → DCIS component may be present at periphery → Tumor infiltrating lymphocytes (TILs): Variable SECTION 3 - NOTTINGHAM GRADING (Yellow box): Grade 1: Tubule formation >75% + Mild pleomorphism + <5 mitoses = Score 3-5 Grade 2: Tubule formation 10-75% + Moderate pleomorphism + 5-10 mitoses = Score 6-7 Grade 3: Tubule formation <10% + Severe pleomorphism + >10 mitoses = Score 8-9 SECTION 4 - SPREAD/BEHAVIOR (Orange box): Local: Skin, pectoralis muscle Lymphatic: Axillary LN (most common), internal mammary LN Hematogenous: Bone (osteolytic), Lung, Liver, Brain, Adrenal Accounts for 75% of all invasive breast carcinomas Clean professional MBBS exam quality diagram, color coded sections, anatomical labels, white background

Medical education flowchart for MBBS university exam. Title: RISK FACTORS OF CARCINOMA BREAST. Clean professional medical diagram on white background. 5 color-coded sections arranged in a grid: HORMONAL FACTORS (pink box): Early menarche before 11 yrs, Late menopause after 55 yrs, Nulliparity, First pregnancy after age 30, No breastfeeding, Prolonged estrogen exposure, Exogenous HRT and OCP use GENETIC FACTORS (purple box): BRCA1 gene chr 17q, BRCA2 gene chr 13q, TP53 mutation Li-Fraumeni syndrome, PALB2 gene, Family history first degree relative, 12 percent of all breast cancers are hereditary DEMOGRAPHIC AND LIFESTYLE (blue box): Age above 50 years accounts for 75 percent of cases, Female sex, Obesity post-menopausal, Alcohol consumption, Smoking, High fat low fiber diet, Physical inactivity RADIATION (orange box): Chest wall radiation before age 30, Prior breast irradiation HISTOLOGIC RISK FACTORS (green box): Fibrocystic disease with atypia RR 3.7 to 4.2, LCIS risk above 7, Dense breasts, Atypical ductal hyperplasia ADH, DCIS precursor to invasive cancer Bottom note: 30 percent of post-menopausal breast cancers are due to MODIFIABLE risk factors Arrows pointing inward toward central label BREAST CARCINOMA. Bold headers, clean fonts, medical textbook quality

Medical education flowchart for MBBS university exam. Title: ETIOPATHOGENESIS OF CARCINOMA BREAST. Step-by-step vertical flow diagram on white background. TOP BOX labeled INITIATING EVENTS in red: Hormonal stimulation by estrogen drives proliferation, Genetic mutations BRCA1 BRCA2 TP53 PALB2, Ionizing radiation and carcinogens, Sporadic somatic mutations accumulate over time Arrow down to THREE PARALLEL MOLECULAR PATHWAY BOXES: Left box labeled LUMINAL PATHWAY in pink: Estrogen receptor activation, PIK3CA mutations, Low grade slow growing tumors, ER positive PR positive HER2 negative, Responds to tamoxifen and aromatase inhibitors Middle box labeled HER2 PATHWAY in orange: HER2 gene amplification chromosome 17q12, Overexpression of HER2 receptor, High grade aggressive, HER2 positive, Treated with Trastuzumab Right box labeled TRIPLE NEGATIVE PATHWAY in dark red: BRCA1 silencing and TP53 mutation, Loss of DNA repair, Basal-like phenotype, ER negative PR negative HER2 negative, Worst prognosis, Chemotherapy only Arrow down to PRECURSOR LESIONS box in yellow: DCIS leads to invasive ductal carcinoma in same breast, LCIS is marker of bilateral risk, ADH progresses to DCIS then invasive carcinoma Arrow down to INVASIVE CARCINOMA box in dark red: IDC accounts for 75 percent, Desmoplastic stroma, Hard fixed irregular mass Arrow down to SPREAD box in black: Local invasion to skin and muscle, Lymphatic spread to axillary nodes, Hematogenous spread to Bone Lung Liver Brain Clean arrows, color coded boxes, professional medical style, MBBS exam ready

Medical education classification diagram for MBBS university exam. Title: HISTOLOGICAL CLASSIFICATION OF BREAST CARCINOMA. Professional branching diagram on white background. Main split from top center into two major branches: LEFT BRANCH labeled NON-INVASIVE IN SITU in green box: Sub-box 1 labeled DCIS Ductal Carcinoma In Situ in light green: Confined within ducts, basement membrane intact. Types listed as Comedo type with central necrosis and calcifications most aggressive, Cribriform type with sieve-like pattern, Micropapillary type, Solid type. Note: Precursor to IDC, detected as microcalcifications on mammogram Sub-box 2 labeled LCIS Lobular Carcinoma In Situ in teal: Marker of increased risk not obligate precursor, Bilateral breast risk, E-cadherin NEGATIVE, Discohesive cells signet ring appearance RIGHT BRANCH labeled INVASIVE INFILTRATING in red box: Sub-box 1 labeled IDC No Special Type NST 75 percent in dark red: Most common type, Hard gritty stellate mass, Desmoplastic stroma, Nottingham grade 1 to 3 Sub-box 2 labeled SPECIAL TYPES in orange with list: - Invasive Lobular Carcinoma 10-15 percent: Single file Indian file pattern, bilateral, E-cadherin negative - Medullary Carcinoma: Soft fleshy mass, syncytial growth, lymphocytic infiltrate, BETTER prognosis - Colloid Mucinous Carcinoma: Abundant extracellular mucin, well-defined, BETTER prognosis - Tubular Carcinoma: Angulated tubules, excellent prognosis - Inflammatory Carcinoma: Dermal lymphatic invasion, peau d orange, WORST prognosis - Paget Disease of Nipple: Intraepidermal spread, eczematoid nipple changes Bottom box labeled MOLECULAR SUBTYPES: Luminal A ER positive PR positive HER2 negative best prognosis, Luminal B ER positive HER2 positive, HER2 enriched, Triple Negative TNBC worst prognosis Color coded branches, bold labels, white background, medical textbook professional style

Medical education flowchart for MBBS university exam. Title: PROGNOSTIC FACTORS OF CARCINOMA BREAST. Professional two-column table-style diagram on white background. Header banner in dark green: PROGNOSTIC FACTORS OF INVASIVE BREAST CARCINOMA Section 1 labeled NUMBER ONE MOST IMPORTANT FACTOR in red border: AXILLARY LYMPH NODE STATUS: No nodes involved 70 to 80 percent 10-year survival, 1 to 3 nodes positive 35 to 40 percent survival, More than 10 nodes positive 10 to 15 percent survival Section 2 labeled TUMOR CHARACTERISTICS in orange border: TUMOR SIZE: T1 less than 2cm best prognosis, T2 2 to 5cm intermediate, T3 more than 5cm worst HISTOLOGICAL GRADE Nottingham Score: Grade 1 well differentiated best, Grade 2 moderately differentiated, Grade 3 poorly differentiated worst. Scoring based on Tubule formation plus Nuclear pleomorphism plus Mitotic rate HISTOLOGICAL TYPE: Tubular and Mucinous excellent, IDC intermediate, Inflammatory worst Section 3 labeled MOLECULAR BIOMARKER FACTORS in purple border: ER and PR STATUS POSITIVE: Better prognosis, responds to tamoxifen and aromatase inhibitors HER2 Overexpression: POOR prognosis, treated with Trastuzumab Ki67 Index: Less than 14 percent low proliferation good, more than 14 percent high poor Triple Negative ER negative PR negative HER2 negative: Worst prognosis chemotherapy only Section 4 labeled OTHER FACTORS in blue border: Lymphovascular invasion present equals poor prognosis Distant metastasis: Bone most common, Lung, Liver, Brain, Adrenal Tumor infiltrating lymphocytes TILs high equals better response Age: Younger patients worse prognosis Bottom summary box: NOTTINGHAM PROGNOSTIC INDEX equals 0.2 times size plus lymph node grade plus tumor grade. Score less than 3.4 excellent, 3.4 to 5.4 moderate, greater than 5.4 poor prognosis Color coded bordered sections, professional medical quality, MBBS exam ready

Medical education detailed pathology diagram for MBBS university exam. Title: PATHOLOGY OF INFILTRATING DUCTAL CARCINOMA IDC of Breast. Professional medical diagram on white background. Section 1 labeled GROSS PATHOLOGY in blue-grey box: Location: Upper outer quadrant most common 50 percent of cases Size: Usually 2 to 3 cm at presentation Consistency: HARD STONY GRITTY texture like cutting an unripe pear Cut surface: Grey-white irregular stellate margins chalky white streaks of desmoplastic stroma Calcification foci: Chalky white deposits visible on mammogram Skin changes: Dimpling and skin tethering from Cooper ligament involvement, Peau d orange from lymphatic blockage, Nipple retraction from central tumor Advanced cases: Fixed to pectoralis muscle and overlying skin Section 2 labeled MICROSCOPIC PATHOLOGY in pink box: Architecture: Irregular nests cords sheets and trabeculae of malignant ductal epithelial cells invading stroma Desmoplastic stromal reaction: Dense fibrous collagenous stroma surrounding tumor cells HALLMARK of IDC Nuclear features: Pleomorphic hyperchromatic nuclei with prominent nucleoli Mitotic figures: Variable increased in high grade tumors Calcifications: Amorphous or psammoma-like DCIS component may be present at periphery of invasive tumor Tumor infiltrating lymphocytes TILs variable Section 3 labeled NOTTINGHAM GRADING in yellow box: Grade 1: Tubule formation more than 75 percent, mild pleomorphism, fewer than 5 mitoses per HPF, Score 3 to 5 Grade 2: Tubule formation 10 to 75 percent, moderate pleomorphism, 5 to 10 mitoses, Score 6 to 7 Grade 3: Tubule formation less than 10 percent, severe pleomorphism, more than 10 mitoses, Score 8 to 9 Section 4 labeled SPREAD in orange box: Local: Skin pectoralis muscle Cooper ligaments Lymphatic: Axillary lymph nodes most common, Internal mammary lymph nodes Hematogenous: Bone osteolytic most common, Lung, Liver, Brain, Adrenal glands Accounts for 75 percent of all invasive breast carcinomas Color coded sections, anatomical detail, professional medical textbook style, MBBS exam ready

Medical education flowchart for MBBS university exam 5 marks question. Title: ADDISON DISEASE (Primary Chronic Adrenocortical Insufficiency). Clean professional medical diagram on white background with color coded sections. TOP BOX - DEFINITION (navy blue banner): Chronic progressive destruction of adrenal cortex leading to decreased glucocorticoids AND mineralocorticoids with compensatory increase in ACTH. Manifestations appear only after more than 90 percent of adrenal cortex is destroyed. SECTION 1 - ETIOLOGY box (red-orange, left side): Bold header: CAUSES Number 1: AUTOIMMUNE ADRENALITIS - most common cause in developed countries, accounts for more than 90 percent of cases Number 2: TUBERCULOSIS - most common cause in developing countries, adrenals large and calcified on CT Number 3: AIDS and other fungal infections - Histoplasma capsulatum, Coccidioides immitis Number 4: METASTATIC CARCINOMA - lung and breast carcinoma to adrenals Number 5: Amyloidosis, Sarcoidosis, Hemochromatosis Center arrow down labeled RESULTS IN SECTION 2 - PATHOGENESIS flow (orange arrows in middle): Destruction of adrenal cortex Arrow down to: LOW CORTISOL plus LOW ALDOSTERONE plus LOW ANDROGENS Arrow down to: NEGATIVE FEEDBACK REMOVED Arrow down to: INCREASED ACTH from pituitary (stimulates melanocytes causing hyperpigmentation) SECTION 3 - CLINICAL FEATURES box (green, right side): Bold header: CLINICAL FEATURES 1. Nonspecific: Progressive weakness, fatigue, tiredness, anorexia 2. GIT: Nausea, vomiting, weight loss, diarrhea 3. HYPERPIGMENTATION: Skin and mucosal surfaces, due to high ACTH, KEY distinguishing feature of PRIMARY disease, buccal mucosa, skin creases, pressure points 4. ELECTROLYTE DISTURBANCES: Low aldosterone causes hyperkalemia and hyponatremia and volume depletion and hypotension BP 80/50 mmHg 5. HYPOGLYCEMIA: Loss of gluconeogenesis due to cortisol deficiency SECTION 4 - LAB FINDINGS box (purple): Increased plasma ACTH Short and prolonged ACTH stimulation test: NO INCREASE in serum cortisol Hyponatremia and Hyperkalemia Anemia Increased BUN and creatinine azotemia Fasting hypoglycemia SECTION 5 - PRIMARY vs SECONDARY comparison (blue): PRIMARY Addison: Low cortisol, Low aldosterone, HIGH ACTH, HYPERPIGMENTATION present SECONDARY: Low cortisol, NORMAL aldosterone, Low ACTH, NO hyperpigmentation Bottom box - INVESTIGATIONS: CT/MRI adrenals - small in autoimmune, large and calcified in TB Clean arrows connecting all sections, bold labels, white background, medical textbook quality, MBBS 5-mark answer ready