title: Duodenal polyp as a cause of chronic anaemia in an adolescent girl.
mesh_terms: D000293:Adolescent; D000740:Anemia / Q000209:etiology*; D002908:Chronic Disease; D004379:Duodenal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000150:complications* / Q000175:diagnosis / Q000601:surgery