title: Massive hemorrhage in an ileal duplication cyst.
abstract: We have described massive intermittent intestinal hemorrhage due to a vascular anomaly in an ileal duplication cyst in a 30-year-old man. This unusual case illustrates that these lesions disguise themselves symptomatically and must be considered in the differential diagnosis of gastrointestinal bleeding.
mesh_terms: D000328:Adult; D006471:Gastrointestinal Hemorrhage / Q000209:etiology* / Q000473:pathology; D006801:Humans; D007082:Ileum / Q000002:abnormalities* / Q000473:pathology; D008297:Male