Villous adenoma of the duct of Wirsung.

A patient presenting with recurrent pancreatitis was found to have a benign polypoid villous adenoma of the duct of Wirsung. The tumor was excised locally via transduodenal access to the duct. The patient has now remained free of pancreatitis for 24 months. Obstruction of the pancreatic duct by this rare tumor appears to have been the cause of pancreatitis. Villous adenomas of the pancreatic duct epithelium may be premalignant.