title: Amebiasis presenting as rectal bleeding without diarrhea in childhood.
abstract: A 6-year-old boy with no history of foreign travel had presented with rectal bleeding without diarrhea for 2 months. Despite negative stool cultures, a diagnosis of intestinal amebiasis was made by colonoscopy with tissue biopsy. In cases of persistent rectal bleeding, even without diarrhea, a diagnosis of amebiasis should be considered. When routine stool parasite examinations are negative, unsuspected amebiasis may be diagnosed by sigmoidoscopy or colonoscopy with tissue biopsy.
mesh_terms: D001706:Biopsy; D002648:Child; D003106:Colon / Q000473:pathology; D003108:Colonic Diseases / Q000469:parasitology* / Q000473:pathology; D003113:Colonoscopy; D004404:Dysentery, Amebic / Q000150:complications* / Q000473:pathology; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008297:Male; D012007:Rectum