title: Villous adenoma of the ampulla of Vater.
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D000368:Aged; D014670:Ampulla of Vater; D003138:Common Bile Duct Neoplasms / Q000175:diagnosis*; D004724:Endoscopy; D005260:Female; D006801:Humans