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A Mallory-Weiss tear occurs in the mucous membrane where the esophagus connects to the stomach. The tear causes bleeding.
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Mallory-Weiss syndrome is bleeding from an arterial blood vessel in the upper gastrointestinal tract, caused by a mucosal gastric tear at or near the point where the esophagus and stomach join. Mallory-Weiss syndrome causes about 5% of all upper gastrointestinal bleeding.
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