A 52-year-old man with cirrhosis presents with hematemesis. Upper endoscopy reveals esophageal varices. Which single clinical or endoscopic feature best distinguishes variceal bleeding from peptic ulcer disease as the source of upper GI bleeding?

Explanation

## Distinguishing Variceal from Peptic Ulcer Bleeding ### Endoscopic Appearance — The Gold Standard Discriminator **Key Point:** The single most reliable discriminating feature is the **endoscopic appearance of the bleeding source itself**. Esophageal varices appear as dilated, tortuous submucosal vessels, often with a blue or purple hue. In contrast, peptic ulcers show a discrete mucosal defect with a visible vessel, adherent clot, or clean base. ### Comparison Table | Feature | Variceal Bleeding | Peptic Ulcer Bleeding | | --- | --- | --- | | **Endoscopic appearance** | Dilated tortuous veins; blue/purple hue | Mucosal ulcer crater; visible vessel or clot | | **Bleeding pattern** | Brisk, torrential | Variable; can be slow or rapid | | **Coffee-ground vomitus** | Possible (slower bleeding) | Common (often slower initial bleed) | | **Prothrombin time** | Elevated (cirrhosis) | Usually normal | | **Platelet count** | Low (cirrhosis/splenomegaly) | Usually normal | | **NSAID history** | Irrelevant | Strong risk factor | ### Why This Matters Clinically **Clinical Pearl:** Variceal bleeding is a medical emergency requiring **variceal ligation or sclerotherapy** plus octreotide infusion. Peptic ulcer bleeding may respond to **PPI therapy** alone or require endoscopic hemostasis (injection, cautery, or clipping). Misidentification delays appropriate therapy. **High-Yield:** The endoscopic appearance — not lab values, not history — is the definitive discriminator because it directly visualizes the source and guides treatment selection. ### Why Other Features Fail as Discriminators - **Coffee-ground vomitus:** Both conditions can present this way; it reflects slower initial bleeding, not the source. - **Elevated PT and thrombocytopenia:** These are markers of cirrhosis, not variceal bleeding per se. A cirrhotic patient can bleed from a peptic ulcer. - **NSAID history:** Highly specific for peptic ulcer, but absence does not exclude it, and does not help identify variceal bleeding. [cite:Harrison 21e Ch 297]