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Anatomy of portal venous system and portosystemic anastomoses. Give me points for this for me to add in my canva slides

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Gray's Anatomy for Students has exactly what I need - "Portal vein" and "Portosystemic anastomosis" sections. Let me read those in full, plus an image search for a diagram.
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portal venous system portosystemic anastomoses diagram

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esophageal varices caput medusae portal hypertension collateral circulation

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I have solid content from Gray's Anatomy for Students plus supplementary details from other surgical texts. This is a well-established anatomy topic, so no PubMed check needed (purely anatomical, not evidence-based). Let me present the slide-ready content.
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This is an excellent labeled diagram of the portosystemic anastomoses. Here's your slide content, organized so you can copy straight into Canva.

Slide-Ready Content: Portal Venous System & Portosystemic Anastomoses

Slide 1 - Portal Venous System: Formation

  • The portal vein is the final common pathway draining venous blood from the spleen, pancreas, gallbladder, and abdominal GI tract into the liver
  • Formed by union of the splenic vein + superior mesenteric vein, posterior to the neck of the pancreas, at vertebral level L2
  • Ascends behind the superior (1st) part of the duodenum, enters the right free margin of the lesser omentum
  • Within the lesser omentum, lies posterior to the bile duct (right) and hepatic artery proper (left), anterior to the epiploic (omental) foramen
  • Near the liver, divides into right and left branches that enter the liver parenchyma

Slide 2 - Tributaries of the Portal Vein

  • Right and left gastric veins (drain lesser curvature of stomach + abdominal esophagus)
  • Cystic veins (from gallbladder)
  • Para-umbilical veins (accompany the ligamentum teres; connect to anterior abdominal wall veins)
  • Splenic vein and superior mesenteric vein (main contributors)

Slide 3 - Splenic Vein

  • Formed from multiple small vessels leaving the splenic hilum
  • Runs right through the splenorenal ligament with splenic artery + tail of pancreas
  • Contacts body of pancreas crossing the posterior abdominal wall
  • Joins the superior mesenteric vein posterior to the pancreatic neck to form the portal vein
  • Tributaries: short gastric veins, left gastro-omental vein, pancreatic veins, (usually) inferior mesenteric vein

Slide 4 - Superior Mesenteric Vein

  • Drains the small intestine, cecum, ascending colon, and transverse colon
  • Begins in the right iliac fossa (union of ileal, cecal, and appendicular veins)
  • Ascends in the mesentery to the right of the superior mesenteric artery

Slide 5 - What Are Portosystemic Anastomoses?

  • Normal communications between the portal venous system (visceral drainage) and the systemic (caval) venous system
  • In health, ~100% of portal blood reaches the liver via hepatic veins
  • In portal hypertension (e.g., cirrhosis), flow to the liver drops and blood is diverted through these collateral channels into the systemic circulation

Slide 6 - The Three (Four) Classic Sites

  1. Gastroesophageal junction - left gastric vein (portal) anastomoses with esophageal tributaries of the azygos vein (systemic/caval)
  2. Anorectal junction - superior rectal vein (portal) anastomoses with middle/inferior rectal veins (systemic, via internal iliac veins)
  3. Anterior abdominal wall / umbilicus - para-umbilical veins (portal) anastomose with superficial epigastric veins of the abdominal wall (systemic)
  4. Retroperitoneal (bare area) sites - veins of Retzius; small retroperitoneal collaterals connecting mesenteric/colonic veins to renal, lumbar, and phrenic veins (systemic) - can form large splenorenal shunts in some patients

Slide 7 - Clinical Correlation: Varices

When portal pressure rises, these anastomotic sites dilate into visible/palpable varices:
  • Esophageal varices - at the gastroesophageal junction; fragile and prone to profuse, life-threatening bleeding
  • Anorectal varices - at the anorectal junction (distinct from ordinary hemorrhoids)
  • Caput medusae - dilated, visible para-umbilical veins radiating from the umbilicus on the abdominal wall

Slide 8 - Diagram to Include

Portosystemic Anastomoses
Labeled diagram showing liver, spleen, stomach, portal vein, splenic vein, superior/inferior mesenteric veins, para-umbilical veins, azygos tributaries, superior/inferior rectal veins, and IVC - ideal for a summary slide.
Source: Gray's Anatomy for Students (7th ed.), Fig. 4.132-4.135, p. 417-420, with supplementary detail from Mulholland & Greenfield's Surgery (7e) and Yamada's Textbook of Gastroenterology (7th ed.) on retroperitoneal collaterals.
A tip for Canva: use Slide 6 as your core "3 sites" mnemonic slide (gastroesophageal / anorectal / umbilical) since that's the most commonly tested set, and add the retroperitoneal point as a bonus/advanced note since it's less universally taught.

Bro I want portal venous system one slide and portosytemic anastomoses one slide

Condensing into exactly two slides, using the same sourced content from before.

Slide 1: Portal Venous System

  • Definition: Final common pathway draining venous blood from the spleen, pancreas, gallbladder, and abdominal GI tract to the liver
  • Formation: Union of splenic vein + superior mesenteric vein, posterior to the neck of the pancreas, at vertebral level L2
  • Course: Ascends behind the 1st part of duodenum → enters right free margin of lesser omentum → lies posterior to bile duct (right) and hepatic artery proper (left), anterior to the omental (epiploic) foramen
  • Termination: Divides into right and left branches on approaching the liver, entering the liver parenchyma
  • Tributaries: Splenic vein, superior mesenteric vein, right/left gastric veins, cystic veins, para-umbilical veins
  • Key contributing veins:
    • Splenic vein - from splenic hilum, through splenorenal ligament, joins SMV behind pancreatic neck
    • Superior mesenteric vein - drains small intestine, cecum, ascending & transverse colon; lies right of the SMA

Slide 2: Portosystemic Anastomoses

  • Definition: Normal communications between the portal venous system and systemic (caval) venous system; become clinically significant in portal hypertension (e.g., cirrhosis), diverting blood away from the liver
  • Three classic sites:
    1. Gastroesophageal junction - left gastric vein (portal) ↔ azygos vein tributaries (systemic) → esophageal varices
    2. Anorectal junction - superior rectal vein (portal) ↔ middle/inferior rectal veins (systemic) → anorectal varices
    3. Umbilicus/anterior abdominal wall - para-umbilical veins (portal) ↔ superficial epigastric veins (systemic) → caput medusae
  • Bonus/advanced site: Retroperitoneal collaterals (veins of Retzius) - mesenteric/colonic veins ↔ renal, lumbar, phrenic veins; can form large splenorenal shunts
  • Clinical note: Esophageal varices are fragile and prone to profuse, life-threatening bleeding
Portosystemic Anastomoses Diagram
Source: Gray's Anatomy for Students, 7th ed., Fig. 4.132-4.135, p. 417-420.

Can u give me a generated AI slide for this

Reading File
Reading File
Running Command

mkdir -p /tmp/workspace/portal-venous-slides/assets && ls -la /tmp/workspace/

Running Command

cd /tmp/workspace/portal-venous-slides && python /tmp/skills/shared/scripts/fetch_images.py "https://cdn.orris.care/cdss_images/384421f0e57fb5b82508f6a3750b8aa6be72989b8f0ba7d2e0c0e15423922bd2.png" > assets/img_result.json && python3 -c " import json, base64 data = json.load(open('assets/img_result.json')) for i, img in enumerate(data): if img['base64']: header, b64 = img['base64'].split(',',1) ext = 'png' if 'png' in header else 'jpg' raw = base64.b64decode(b64) with open(f'assets/anastomoses.{ext}','wb') as f: f.write(raw) print('saved', f'assets/anastomoses.{ext}', len(raw)) else: print('error', img.get('error')) "

Now building a designed 2-slide deck with a medical color theme (deep teal/maroon), bullet content, and the anastomoses diagram.
Writing File

~/portal-venous-slides/build_deck.py

from pptx import Presentation
from pptx.util import Inches, Pt, Emu
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN, MSO_ANCHOR
from pptx.enum.shapes import MSO_SHAPE
from pptx.oxml.ns import qn

# ---------- Theme ----------
DARK_TEAL = RGBColor(0x0B, 0x3D, 0x3E)
TEAL = RGBColor(0x14, 0x6B, 0x6E)
ACCENT = RGBColor(0xC7, 0x4A, 0x3A)   # deep maroon/rust accent
LIGHT_BG = RGBColor(0xF5, 0xF3, 0xEC)
WHITE = RGBColor(0xFF, 0xFF, 0xFF)
DARK_TEXT = RGBColor(0x22, 0x2B, 0x2B)
GREY_TEXT = RGBColor(0x55, 0x5D, 0x5D)

prs = Presentation()
prs.slide_width = Inches(13.333)
prs.slide_height = Inches(7.5)
blank = prs.slide_layouts[6]

def set_bg(slide, color):
    fill = slide.background.fill
    fill.solid()
    fill.fore_color.rgb = color

def add_rect(slide, x, y, w, h, color, line=False):
    shp = slide.shapes.add_shape(MSO_SHAPE.RECTANGLE, x, y, w, h)
    shp.fill.solid()
    shp.fill.fore_color.rgb = color
    shp.line.fill.background() if not line else None
    shp.shadow.inherit = False
    return shp

def add_text(slide, x, y, w, h, text, size, color, bold=False, italic=False,
             align=PP_ALIGN.LEFT, font="Calibri", anchor=None, line_spacing=1.0):
    tb = slide.shapes.add_textbox(x, y, w, h)
    tf = tb.text_frame
    tf.word_wrap = True
    if anchor:
        tf.vertical_anchor = anchor
    p = tf.paragraphs[0]
    p.text = text
    p.alignment = align
    p.line_spacing = line_spacing
    r = p.runs[0]
    r.font.size = Pt(size)
    r.font.bold = bold
    r.font.italic = italic
    r.font.color.rgb = color
    r.font.name = font
    return tb

def add_bullets(slide, x, y, w, h, items, size=15, color=DARK_TEXT, font="Calibri",
                 space_after=8, line_spacing=1.08):
    """items: list of (level, text, bold_lead_or_None)"""
    tb = slide.shapes.add_textbox(x, y, w, h)
    tf = tb.text_frame
    tf.word_wrap = True
    first = True
    for level, text, lead in items:
        p = tf.paragraphs[0] if first else tf.add_paragraph()
        first = False
        p.level = level
        p.space_after = Pt(space_after)
        p.line_spacing = line_spacing
        marker = "●  " if level == 0 else "-   "
        if lead:
            r1 = p.add_run()
            r1.text = marker + lead
            r1.font.bold = True
            r1.font.size = Pt(size)
            r1.font.color.rgb = ACCENT if level == 0 else TEAL
            r1.font.name = font
            r2 = p.add_run()
            r2.text = text
            r2.font.size = Pt(size)
            r2.font.color.rgb = color
            r2.font.name = font
        else:
            r1 = p.add_run()
            r1.text = marker + text
            r1.font.size = Pt(size)
            r1.font.color.rgb = color if level == 0 else GREY_TEXT
            r1.font.name = font
            if level == 0:
                r1.font.bold = False
    return tb

def header(slide, kicker, title):
    set_bg(slide, LIGHT_BG)
    # top band
    add_rect(slide, 0, 0, prs.slide_width, Inches(1.35), DARK_TEAL)
    add_rect(slide, 0, Inches(1.35), prs.slide_width, Inches(0.06), ACCENT)
    add_text(slide, Inches(0.6), Inches(0.18), Inches(8), Inches(0.35), kicker.upper(),
              13, RGBColor(0xB9,0xD9,0xD6), bold=True, font="Calibri")
    add_text(slide, Inches(0.6), Inches(0.5), Inches(11.5), Inches(0.8), title,
              32, WHITE, bold=True, font="Calibri")

def footer(slide, note, page_no):
    add_text(slide, Inches(0.6), Inches(7.12), Inches(9), Inches(0.3), note,
              10, GREY_TEXT, italic=True, font="Calibri")
    add_text(slide, Inches(12.5), Inches(7.12), Inches(0.6), Inches(0.3), str(page_no),
              10, GREY_TEXT, align=PP_ALIGN.RIGHT, font="Calibri")

# ============================================================
# SLIDE 1 — Portal Venous System
# ============================================================
s1 = prs.slides.add_slide(blank)
header(s1, "Hepatobiliary Anatomy", "Portal Venous System")

# Left column: formation + course
left_x = Inches(0.6)
col_w = Inches(6.0)
add_text(s1, left_x, Inches(1.65), col_w, Inches(0.4), "Formation & Course", 17, DARK_TEAL, bold=True)
items_left = [
    (0, "Union of the ", "Definition: "),
]
# custom manual bullets for richer control
tb = s1.shapes.add_textbox(left_x, Inches(2.05), col_w, Inches(4.6))
tf = tb.text_frame
tf.word_wrap = True

def para(tf, first, lead, rest, size=14.5, lead_color=ACCENT, rest_color=DARK_TEXT, level=0, space_after=9):
    p = tf.paragraphs[0] if first else tf.add_paragraph()
    p.level = level
    p.space_after = Pt(space_after)
    p.line_spacing = 1.12
    marker = "●  " if level == 0 else "     -  "
    r1 = p.add_run(); r1.text = marker + (lead if lead else "")
    r1.font.bold = bool(lead); r1.font.size = Pt(size); r1.font.color.rgb = lead_color if level==0 else TEAL
    r1.font.name = "Calibri"
    if rest:
        r2 = p.add_run(); r2.text = rest
        r2.font.size = Pt(size); r2.font.color.rgb = rest_color; r2.font.name = "Calibri"
    return p

para(tf, True,  "Definition: ", "final common pathway draining venous blood from the spleen, pancreas, gallbladder, and abdominal GI tract to the liver")
para(tf, False, "Formation: ", "union of the splenic vein + superior mesenteric vein, posterior to the neck of the pancreas, at vertebral level L2")
para(tf, False, "Course: ", "ascends posterior to the 1st part of duodenum, enters the right free margin of the lesser omentum")
para(tf, False, "", "within lesser omentum: posterior to bile duct (right) & hepatic artery proper (left); anterior to the epiploic (omental) foramen", lead_color=TEAL, level=1)
para(tf, False, "Termination: ", "divides into right and left branches on approaching the liver, entering the liver parenchyma")

# Right column: tributaries + contributing veins
right_x = Inches(6.9)
col_w2 = Inches(5.9)
add_text(s1, right_x, Inches(1.65), col_w2, Inches(0.4), "Tributaries & Contributing Veins", 17, DARK_TEAL, bold=True)
tb2 = s1.shapes.add_textbox(right_x, Inches(2.05), col_w2, Inches(4.6))
tf2 = tb2.text_frame
tf2.word_wrap = True
para(tf2, True,  "Direct tributaries: ", "right & left gastric veins, cystic veins, para-umbilical veins")
para(tf2, False, "Splenic vein: ", "arises at splenic hilum, runs through splenorenal ligament with splenic artery + pancreatic tail; receives short gastric, left gastro-omental, pancreatic veins, and usually the inferior mesenteric vein")
para(tf2, False, "Superior mesenteric vein: ", "drains small intestine, cecum, ascending & transverse colon; begins in right iliac fossa, ascends to the RIGHT of the SMA")
para(tf2, False, "Clinical relevance: ", "portal vein pressure & patency are key in cirrhosis, portal hypertension, and pre-op vascular planning (e.g., pancreaticoduodenectomy)")

footer(s1, "Source: Gray's Anatomy for Students, 7th ed., Fig. 4.132-4.133, p. 417-418", 1)

# ============================================================
# SLIDE 2 — Portosystemic Anastomoses
# ============================================================
s2 = prs.slides.add_slide(blank)
header(s2, "Hepatobiliary Anatomy", "Portosystemic Anastomoses")

# Left: text content
left_x2 = Inches(0.6)
col_w3 = Inches(6.5)
add_text(s2, left_x2, Inches(1.6), col_w3, Inches(0.75),
          "Normal communications between the portal and systemic (caval) venous systems; open up in portal hypertension (e.g., cirrhosis) to divert blood away from the liver.",
          13.5, GREY_TEXT, italic=True, line_spacing=1.15)

tb3 = s2.shapes.add_textbox(left_x2, Inches(2.55), col_w3, Inches(4.3))
tf3 = tb3.text_frame
tf3.word_wrap = True
para(tf3, True,  "1. Gastroesophageal junction: ", "left gastric vein (portal) <-> azygos vein tributaries (systemic) -> esophageal varices", size=14.5)
para(tf3, False, "2. Anorectal junction: ", "superior rectal vein (portal) <-> middle/inferior rectal veins (systemic) -> anorectal varices", size=14.5)
para(tf3, False, "3. Umbilicus / abdominal wall: ", "para-umbilical veins (portal) <-> superficial epigastric veins (systemic) -> caput medusae", size=14.5)
para(tf3, False, "Bonus site - Retroperitoneal (veins of Retzius): ", "mesenteric/colonic veins <-> renal, lumbar & phrenic veins; may form large spontaneous splenorenal shunts", size=13.5, lead_color=TEAL)
para(tf3, False, "Clinical note: ", "esophageal varices are fragile and prone to profuse, life-threatening hemorrhage - the most urgent of the three", size=13.5, lead_color=ACCENT)

# Right: image panel with border and caption
img_path = "/tmp/workspace/portal-venous-slides/assets/anastomoses.jpg"
pic_x, pic_y, pic_w = Inches(7.35), Inches(1.55), Inches(5.5)
frame = add_rect(s2, pic_x - Inches(0.08), pic_y - Inches(0.08), pic_w + Inches(0.16), Inches(5.15), WHITE)
frame.line.color.rgb = TEAL
frame.line.width = Pt(1.5)
pic = s2.shapes.add_picture(img_path, pic_x, pic_y, width=pic_w)
add_text(s2, pic_x - Inches(0.08), pic_y + Inches(5.05), pic_w + Inches(0.16), Inches(0.3),
          "Fig. Portosystemic anastomoses (Gray's Anatomy for Students, Fig. 4.134)", 10.5, GREY_TEXT, italic=True, align=PP_ALIGN.CENTER)

footer(s2, "Source: Gray's Anatomy for Students, 7th ed., Fig. 4.134-4.135, p. 419-420", 2)

prs.save("/tmp/workspace/portal-venous-slides/Portal_Venous_System_and_Portosystemic_Anastomoses.pptx")
print("Saved.")
Running Command

cd /tmp/workspace/portal-venous-slides && python3 build_deck.py

Let me render it to verify the visual layout before delivering.
Running Command

cd /tmp/workspace/portal-venous-slides && ls /tmp/skills/pptx/scripts/ 2>/dev/null; ls /tmp/skills/shared/scripts/ 2>/dev/null; which libreoffice soffice 2>/dev/null; echo done

Running Command

cd /tmp/workspace/portal-venous-slides && python3 -c " from PIL import Image im = Image.open('assets/anastomoses.jpg') print(im.size) w,h = im.size pic_w_in = 5.5 pic_h_in = pic_w_in * h / w print('height in inches at width 5.5:', pic_h_in) "

Editing File

~/portal-venous-slides/build_deck.py

Successfully replaced 1 instance(s) of the string in '/tmp/workspace/portal-venous-slides/build_deck.py'
Running Command

cd /tmp/workspace/portal-venous-slides && python3 build_deck.py && ls -la

Deck built successfully with a designed dark-teal/maroon medical theme, two slides, and the labeled anatomy diagram embedded.

Portal Venous System and Portosystemic Anastomoses

Presentation · PPTX

What's in it:
  • Slide 1 - Portal Venous System: formation (splenic vein + SMV at L2), course through the lesser omentum, termination into right/left branches, tributaries, and the splenic/superior mesenteric vein details
  • Slide 2 - Portosystemic Anastomoses: the 3 classic sites (gastroesophageal, anorectal, umbilical) with their clinical varix names, a bonus retroperitoneal site, plus the labeled Gray's Anatomy diagram on the right with a citation caption
Both slides use a dark teal header band with a rust/maroon accent line, cream background, and color-coded bold lead-ins for each bullet so it's easy to skim.
Since this was generated with python-pptx (not a native Canva AI generator), you can still import it into Canva: open Canva → Create a design → Import file → upload the .pptx, and it'll bring in the text boxes and image as editable elements you can restyle with your own Canva theme/fonts if you want a different look.
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