Melena causes

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Melena Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Causes

The upper part of the GI tract will usually cause black stools due to:

• Abnormal blood vessels (vascular malformation)
• A tear in the esophagus from violent vomiting (Mallory-Weiss tear)
• Bleeding stomach or duodenal ulcer
• Inflammation of the stomach lining (gastritis)
• Lack of proper blood flow to the intestines (bowel ischemia)
• Trauma or foreign body
• Widened, overgrown veins (called varices) in the esophagus and stomach