A 61-year-old man was seen at the hospital because of melena and anemia. No bleeding lesions were revealed by an angiography and a colonofiber-scopy. We could find a bleeding lesion in the terminal ileum by ^99mTc hemorrhagic scintigraphy. Under laparotomy, bloody fluid was observed in the entire colon and terminal ileum. We could touch a tumor in the terminal ileum. Partial resection of the ileum was performed. The pathological diagnosis of this tumor was lipoma with erosion on its mucosal surface.
Hemorrhagic scintigraphy can detect even minute and intermittently bleeding lesions of the gastro-intestinal tract. It is especially useful for the small intestine.