title: Carcinoid tumors of the duodenum: endoscopic diagnosis of two cases.
mesh_terms: D002276:Carcinoid Tumor / Q000175:diagnosis* / Q000473:pathology; D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004386:Duodenum / Q000473:pathology; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged