Esophageal Varices

Slide 1 · Esophageal Varices

Portal hypertension · Vascular remodeling · Hemorrhage

Portal hypertension

Varices

Bleeding

Pathology and clinicopathologic integration

Dr Abu Suraih Sakhri

MBBS, MD (Pathology)

www.abusuraihsakhri.com

Slide 2 · Learning objectives

Explain how increased portal venous resistance produces gastroesophageal collaterals.

Recognize variceal morphology in the mucosa and submucosa.

Link vessel rupture to potentially fatal upper gastrointestinal hemorrhage.

Interpret textbook prevalence, bleeding risks, recurrence, and management.

Slide 3 · Definition: Dilated distal esophageal veins

Esophageal varices are abnormally dilated venous channels in the lower esophagus.

The affected veins belong to the mucosal and submucosal plexuses.

Varices arise as a consequence of portal hypertension and portosystemic diversion.

The principal danger is rupture of a large varix, not mere venous dilation.

Slide 4 · From portal hypertension to varices

Impeded portal drainage

Resistance to blood flow through the portal system and liver rises.

Collateral recruitment

Portosystemic communicating channels carry redirected blood.

Esophageal congestion

Subepithelial and submucosal plexuses expand into tortuous varices.

SCHEMATIC

Slide 5 · Why the lower esophagus is vulnerable

The gastroesophageal junction is a major site of communication between portal and systemic venous drainage.

Elevated portal pressure diverts blood into collateral veins at this junction.

Congested distal esophageal veins dilate within a relatively thin mucosal wall.

Rupture opens a high-flow venous channel to the gastrointestinal lumen.

Slide 6 · Normal route and collateral bypass

Portal inflow

Blood from abdominal splanchnic venous beds normally travels toward the liver.

Liver passage

Hepatic microcirculation receives portal blood before systemic return.

Collateral bypass

With portal hypertension, blood also moves through portosystemic channels.

SCHEMATIC

Slide 7 · Pressure–flow relation in portal hypertension

Increased resistance

Cirrhotic scarring, nodules or vascular obstruction oppose portal flow.

Raised portal pressure

Portal blood faces an increased pressure burden.

Venous shunting

Collateral connections enlarge at portal–systemic interfaces.

SCHEMATIC

Slide 8 · Portal hypertension has multiple locations

Prehepatic obstruction occurs before portal blood enters the hepatic microvasculature.

Intrahepatic resistance develops within liver parenchymal and vascular pathways.

Posthepatic obstruction affects venous drainage beyond hepatic sinusoids.

All three can elevate portal pressure; Cirrhosis is the dominant intrahepatic cause.

Slide 9 · Cirrhosis: Structural resistance

Chronic hepatic injury

Repeated injury, repair and fibrogenesis remodel the liver.

Nodules and fibrous bands

Parenchymal architecture and intrahepatic channels are distorted.

Sinusoidal impediment

Fibrosis and nodular compression restrict portal flow.

SCHEMATIC

Slide 10 · Cirrhosis is not synonymous with liver failure

Cirrhosis is a diffuse architectural remodeling process with fibrosis and nodules.

Its vascular resistance can produce portal hypertension and varices.

The clinical degree of hepatic insufficiency varies among patients.

Varices are therefore a vascular manifestation, not a histologic definition of cirrhosis.

Slide 11 · Liver disease contexts for esophageal varices

Alcohol-associated cirrhosis is a common setting for gastroesophageal varices.

Varices also complicate cirrhosis of other causes, including nonalcoholic fatty liver disease.

Chronic viral hepatitis is another major contributor to cirrhosis and portal hypertension.

Noncirrhotic portal hypertension must be considered when cirrhosis is absent.

Slide 12 · Two drivers of portal hypertension

Resistance within liver

Scarring, nodules and sinusoidal contraction obstruct portal passage.

Increased portal inflow

Splanchnic arterial vasodilation increases venous return to the portal system.

Slide 13 · Sinusoidal endothelial dysfunction

Endothelial changes

Reduced intrahepatic nitric oxide activity.

Vasoconstrictor influence

Greater endothelin-1 and other constrictor activity.

Dynamic resistance

Contraction of smooth muscle cells and myofibroblasts narrows the hepatic microcirculation.

SCHEMATIC

Slide 14 · Splanchnic hyperdynamic circulation

Arterial vasodilation

Splanchnic circulation dilates; Nitric oxide is implicated.

Increased splanchnic flow

More blood enters regional venous outflow.

Elevated portal inflow

Portal pressure is further sustained despite collateral drainage.

SCHEMATIC

Slide 15 · Portal hypertension persists despite collaterals

Collateral channels provide alternate routes for portal drainage.

They do not reliably normalize resistance across a diseased liver.

Persistently elevated inflow and resistance maintain pressure within the collateral bed.

Esophageal varices consequently remain exposed to an abnormal hemodynamic load.

Slide 16 · Prehepatic causes of raised portal pressure

Portal vein thrombosis

Obstructive thrombus limits flow before the hepatic portal branches.

Portal vein narrowing

Structural narrowing can impede entry of portal blood.

High splenic inflow

Marked splenomegaly may increase splenic venous delivery.

Slide 17 · Intrahepatic causes beyond cirrhosis

Portal tract disorders

Schistosomiasis and nodular regenerative hyperplasia may increase resistance.

Infiltrative disease

Amyloidosis, granulomatous disease and malignancy may impair flow.

Other parenchymal disease

Massive fatty change or primary biliary cholangitis may contribute.

Slide 18 · Posthepatic causes of portal hypertension

Hepatic vein outflow

Venous drainage obstruction, including Budd–Chiari syndrome.

Cardiac causes

Severe right-sided heart failure elevates back pressure.

Pericardial limitation

Constrictive pericarditis impedes systemic venous return.

Slide 19 · Localize the obstacle along portal flow

Before liver

Within liver

After liver

Portal vein thrombus

Cirrhosis

Hepatic vein obstruction

Structural portal narrowing

Nodular regenerative hyperplasia

Right-sided heart failure

Increased splenic inflow

Schistosomiasis / infiltration

Constrictive pericarditis

Slide 20 · Formation of portosystemic collateral channels

Portal pressure rises

A pressure gradient favors alternative venous drainage.

Communicating veins enlarge

Remodeling increases flow through portal–systemic junctions.

Visible collateral disease

Distal esophageal varices are a high-risk manifestation.

SCHEMATIC

Slide 21 · Major sites of portosystemic shunting

Gastroesophageal junction

Submucosal esophageal and gastric varices; Major bleeding hazard.

Periumbilical region

Dilated abdominal wall collateral veins (caput medusae).

Rectal / retroperitoneal beds

Additional collateral routes associated with portal hypertension.

Slide 22 · Esophageal and proximal gastric continuity

Increased portal pressure affects veins on both sides of the gastroesophageal junction.

Submucosal and subepithelial veins are particularly prominent sites of congestion.

Esophageal and proximal gastric varices therefore share a hemodynamic origin.

The involved segment is primarily distal esophagus and adjacent stomach.

Slide 23 · Esophageal wall: Venous compartments

Lumen

Mucosa

Submucosa

Dilated veins

Intact luminal lining overlies vulnerable vessels.

Mucosal and submucosal channels become dilated.

Tortuosity creates an irregular vascular contour.

SCHEMATIC · NOT HISTOLOGY

Slide 24 · Evolution of the venous plexus

Communicating vein

A small venous channel drains across the portal–systemic interface.

Progressive congestion

Higher pressure and collateral flow expand the channel.

Established varix

Enlarged tortuous mucosal or submucosal vessel protrudes toward the lumen.

SCHEMATIC

Slide 25 · Morphology: Serpiginous, dilated veins

Histologically, veins are enlarged and tortuous within the mucosa and submucosa.

A dense tangle of vascular lumina may produce submucosal expansion.

The mucosa can remain intact before bleeding occurs.

A prominent varix represents vascular dilation rather than a neoplastic mass.

Slide 26 · Correlating views of a varix

Endoscopy

Protruding submucosal nodules may be seen beneath the surface.

Vascular imaging

Tortuous venous pathways demonstrate collateral circulation.

Microscopy

Dilated veins are located below squamous mucosa.

Slide 27 · Small varices often remain unruptured

Most small varices never bleed.

Presence of a varix is not equivalent to immediate hemorrhage.

Size, tortuosity and hemodynamic conditions influence bleeding risk.

Morphologic risk and underlying liver disease must be considered together.

Slide 28 · Variceal prevalence increases with decompensation

Gastroesophageal varices in cirrhosis

0%

20%

40%

60%

Compensated

30%

Decompensated

60%

Source categories are compensated and decompensated cirrhosis; This is prevalence, not bleeding probability.

Slide 29 · Prevalence is not bleeding risk

The 30% and 60% figures describe varices among two cirrhosis categories.

They do not state the annual probability of rupture.

Varix morphology and pressure-related factors must be assessed separately.

Avoid interpreting prevalence as a prognostic event rate.

Slide 30 · Mechanistic pathway to variceal rupture

Large tortuous varix

An expanded venous channel lies close to the mucosal surface.

Wall disruption

Vascular and sometimes adjacent mucosal integrity fails.

Hemorrhage

Blood enters the lumen or the esophageal wall.

SCHEMATIC

Slide 31 · Risk factors for variceal hemorrhage

Variceal anatomy

Large caliber or tortuous configuration.

Hemodynamics

Elevated hepatic venous pressure gradient.

Clinical history / liver status

Previous bleeding and advanced liver disease.

Slide 32 · Variceal size and tortuosity matter

Large veins have greater potential for severe bleeding when they rupture.

Tortuous vessels reflect pronounced collateral venous remodeling.

Both large and tortuous varices as risk features.

A visually abnormal vein still requires clinical context for risk assessment.

Slide 33 · Hepatic venous pressure gradient: Risk signal

An elevated hepatic venous pressure gradient is associated with bleeding risk.

It reflects the pressure burden across the hepatic vascular bed.

The provided source does not supply a risk-stratification threshold.

A numerical cutoff is deliberately omitted rather than inferred.

Slide 34 · Previous hemorrhage changes risk assessment

A history of variceal bleeding is itself a recognized risk factor.

Prior bleeding implies that the collateral bed has already ruptured.

Recurrent events are common among survivors.

Prevention of further bleeding is a distinct clinical goal.

Slide 35 · Advanced liver disease amplifies clinical risk

Advanced liver disease is associated with variceal bleeding risk.

The underlying hepatic disorder also affects physiologic reserve.

A similar anatomical lesion may have different consequences in different patients.

Risk discussion must consider both vascular morphology and liver status.

Slide 36 · Before rupture: Intact squamous mucosa

Lumen

Mucosa

Submucosa

Dilated veins

A dilated vessel may lie immediately below the epithelium.

Intact mucosa does not rule out a prominent varix.

Endoscopic bulging corresponds to submucosal vascular enlargement.

SCHEMATIC · NOT HISTOLOGY

Slide 37 · After rupture: Two hemorrhage locations

Variceal wall defect

Dilated venous channel develops a breach.

Intraluminal escape

Blood pours into the esophageal lumen.

Intramural escape

Hemorrhage may also track into the esophageal wall.

SCHEMATIC

Slide 38 · Rupture may damage overlying mucosa

Variceal hemorrhage can coexist with mucosal ulceration.

Necrosis may accompany local tissue injury.

These surface changes are consequences or accompaniments of rupture.

Do not mistake associated ulceration for the primary vascular lesion.

Slide 39 · Thrombosis after previous bleeding

Venous thrombosis may be found if varices ruptured previously.

A thrombus documents vascular luminal alteration rather than simple dilation.

Prior hemorrhage can coexist with inflammatory change.

Morphologic interpretation benefits from treatment history.

Slide 40 · Inflammation and repair in a treated varix

Inflammation may surround veins affected by earlier hemorrhage.

Sclerotherapy intentionally produces local thrombosis and sclerosis.

Previously treated varices can differ markedly from untreated vessels.

A biopsy or postmortem specimen should be interpreted in clinical context.

Slide 41 · Histologic pattern: Untreated versus previously treated

Untreated or unruptured

Large, tortuous mucosal/submucosal veins; Epithelium may be intact.

Previously ruptured

Thrombosis, hemorrhage, inflammation, ulceration or necrosis may be present.

Previously sclerosed

Therapeutic vascular alteration can add scarring and thrombotic change.

Slide 42 · Endoscopic appearance versus histologic substrate

Endoscopy shows protruding submucosal nodules rather than the entire venous network.

Angiographic imaging illustrates the tortuous collateral pathways.

Microscopy identifies dilated vessels below squamous mucosa.

These views are complementary; None is a substitute for the others.

Slide 43 · Why variceal bleeding can be catastrophic

Portal hypertensive varix

An enlarged collateral receives blood under abnormal pressure.

Vessel rupture

Rapid loss of blood into the upper GI tract may follow.

Major hemorrhage

Severe bleeding may progress to exsanguination.

SCHEMATIC

Slide 44 · Clinical presentation: Upper GI hemorrhage

Bleeding esophageal varices may manifest as massive hematemesis.

The source characterizes variceal hemorrhage as a medical emergency.

Large-volume bleeding reflects disruption of the submucosal venous collateral.

Immediate control of hemorrhage is the clinical priority.

Slide 45 · Mortality of a bleeding episode

15–20%

Per-episode mortality

The risk remains substantial despite available interventions.

Slide 46 · Risk after an initial bleed

>50%

Recurrent bleeding within 1 year

Among patients who survive a first variceal hemorrhage.

Slide 47 · First bleed versus recurrent hemorrhage

Initial episode

Potentially life-threatening acute loss of blood; Risk factors include large varices.

After survival

More than half have recurrence within one year in the chapter’s description.

Slide 48 · Acute care targets the bleeding circuit

Reduce splanchnic flow

Medical vasoconstriction diminishes delivery into the portal system.

Control varix locally

Endoscopic treatment targets the affected venous channel.

Prevent recurrence

Portal-flow reduction and planned ligation address future episodes.

SCHEMATIC

Slide 49 · Medical therapy: Splanchnic vasoconstriction

The source identifies pharmacologic splanchnic vasoconstriction as acute therapy.

Vasoconstriction reduces inflow contributing to portal venous pressure.

This treats a hemodynamic driver rather than the histologic scar of cirrhosis.

Specific medication dosing is outside the supplied textbook excerpt.

Slide 50 · Endoscopic variceal ligation

Ligation constricts the variceal channel locally using endoscopically applied bands.

The affected vessel is mechanically occluded to stop or prevent bleeding.

Ligation as both treatment and preventive strategy.

Past ligation may leave recognizable treatment-related changes.

Slide 51 · Sclerotherapy: Thrombotic obliteration

The source describes injection of thrombotic agents into varices.

The intended effect is local thrombosis and obliteration of the target channel.

Microscopy may subsequently show treatment-associated changes.

Sclerotherapy is distinct from systemic management of portal pressure.

Slide 52 · Balloon tamponade: Mechanical hemorrhage control

Balloon tamponade is listed as an emergency endoscopic/mechanical option in the source.

Applied pressure can temporarily compress a bleeding variceal region.

It targets active hemorrhage rather than correcting chronic portal hypertension.

Its role is a bridging hemorrhage-control concept, not a definitive cure.

Slide 53 · Compare strategies by immediate target

Approach

Primary action

Pathologic target

Vasoconstriction

Reduces splanchnic inflow

Portal hemodynamic load

Band ligation

Mechanical occlusion

Individual varix

Sclerotherapy

Induced thrombosis

Individual varix

Balloon tamponade

Pressure compression

Active bleeding site

Slide 54 · β-blockers and prevention of bleeding

β-blockers as treatment to reduce portal blood flow.

The strategy acts upstream of the dilated collateral veins.

Endoscopic variceal ligation provides local preventive therapy.

Preventive treatment is important because recurrent bleeding is frequent.

Slide 55 · Case: Massive hematemesis

Clinical vignette

A patient with established cirrhosis suddenly develops a large-volume upper gastrointestinal hemorrhage.

Interpretation task

What structural lesion and mechanism should be suspected?

Teaching answer

Portal hypertension with a ruptured distal esophageal submucosal varix.

Slide 56 · Case: Post-treatment esophageal tissue

Clinical vignette

A previously treated patient has dilated veins with thrombus and adjacent inflammatory change in an esophageal specimen.

Interpretation task

Which clinical history most directly explains this combination?

Teaching answer

Prior variceal rupture and/or sclerotherapy may explain thrombosis and inflammation.

Slide 57 · Case: Different stages of cirrhosis

Clinical vignette

Two patient cohorts have compensated and decompensated cirrhosis, respectively.

Interpretation task

Which cohort has the higher reported prevalence of gastroesophageal varices?

Teaching answer

Decompensated cirrhosis: 60% versus 30% in compensated cirrhosis, as reported.

Slide 58 · Esophageal varices versus other portosystemic signs

Gastroesophageal varices

Most concerning for potentially massive upper-GI hemorrhage.

Caput medusae

Distended abdominal wall collaterals radiating near umbilicus.

Rectal collaterals

Portosystemic channels around rectal region; Different clinical bleeding profile.

Slide 59 · Integrate lesion, mechanism and outcome

Hepatic vascular resistance

Cirrhosis or another obstructive process increases portal pressure.

Collateral remodeling

Venous channels at the distal esophagus progressively dilate.

Variceal hemorrhage

Rupture creates a potentially fatal GI bleeding emergency.

SCHEMATIC

Slide 60 · Five discriminating pathology facts

A varix is a dilated vein in distal esophageal mucosa/submucosa.

Portal hypertension drives collateral recruitment at the gastroesophageal junction.

Varices are commoner in decompensated than compensated cirrhosis.

Rupture may cause massive bleeding, mucosal injury and thrombosis.

A prior bleed and advanced liver disease indicate greater clinical concern.

Slide 61 · Principal references

Robbins, Cotran & Kumar

Pathologic Basis of Disease · 11th edition (2026)

Chapter 17: Esophageal Varices, pp. 691–693, with Fig. 17.8 description.

Chapter 18: Cirrhosis and Portal Hypertension, pp. 753–755.

Chapter 11: Portosystemic shunts as a vascular complication, pp. 471–472.