title: Persistent iron deficiency.
mesh_terms: D000328:Adult; D018798:Anemia, Iron-Deficiency / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy*; D006471:Gastrointestinal Hemorrhage / Q000150:complications / Q000175:diagnosis; D006801:Humans; D008297:Male; D012008:Recurrence; D013683:Telangiectasia, Hereditary Hemorrhagic / Q000150:complications / Q000175:diagnosis; D017211:Treatment Failure