title: Recurrent gastrointestinal bleeding from jejunal duplication.
abstract: A 26-year-old man presented on several occasions over a four-year period because of lower gastrointestinal bleeding. The cause of this eluded correct diagnosis and curative therapy until liver-spleen imaging and a tagged RBC bleeding study were performed at the time of active bleeding and compared.
mesh_terms: D000328:Adult; D004912:Erythrocytes; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D007583:Jejunum / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008099:Liver / Q000000981:diagnostic imaging; D008297:Male; D011859:Radiography; D011877:Radionuclide Imaging; D013154:Spleen / Q000000981:diagnostic imaging