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Endoscopic findings of warfarin anticoagulated patients with gastrointestinal bleeding.
| Source of bleeding | Patients (%) |
|---|---|
| Upper gastrointestinal bleeding | |
| Esophageal ulcer | 1 (4.0%) |
| Gastric ulcer | 1 (4.0%) |
| Duodenal ulcer | 16 (64.0%) |
| Gastric polyp | 1 (4.0%) |
| Lower gastrointestinal bleeding | |
| Rectal cancer | 2 (8.0%) |
| Pseudomembranous colitis | 1 (4.0%) |
| No identifiable source | 3 (12.0%) |
