A 32 year-old man presented with melena and severe anemia, resulting in syncope. Left: Endoscopy revealed an ulcer with a large adherent clot in the duodenal bulb.
Center: After the clot was suctioned away, a small ulcer with visible vessel became evident.
Right: Large sentinel clot in a duodenal ulcer found in an 82 year-old woman who presented with hematemsis.
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