Leiomyoma in a "blind pouch".

This report describes a patient with anemia and chronic diarrhea secondary to an ulcerating leiomyoma in a blind pouch. It emphasizes the clinical and radiologic difficulty in diagnosing focal lesions of the mesenteric small bowel and the need for a careful scrutiny of all segments of small bowel in a patient with unexplained anemia and diarrhea.