title: Attempted retrograde cannulation of the ampulla: a probable cause of mass in the pancreas.
abstract: Two patients developed a focal mass in the head of the pancreas presumably following attempted endoscopic retrograde cholangiopancreatography (ERCP). These lesions grossly mimicked carcinomas of the pancreas. In one case a radical pancreatoduodenectomy was performed because of the misleading gross findings. A focal mass in the pancreas following ERCP may develop due to asymptomatic pancreatitis caused by the procedure.
mesh_terms: D000368:Aged; D014670:Ampulla of Vater; D001660:Biliary Tract Diseases / Q000209:etiology; D002404:Catheterization / Q000009:adverse effects*; D002758:Cholangiography / Q000379:methods; D003937:Diagnosis, Differential; D004724:Endoscopy; D005260:Female; D006801:Humans; D008875:Middle Aged; D010183:Pancreatic Ducts / Q000000981:diagnostic imaging; D010190:Pancreatic Neoplasms / Q000175:diagnosis; D010195:Pancreatitis / Q000175:diagnosis / Q000209:etiology*