SONOGRAPHIC FEATURES OF MUCINOUS BILIARY PAPILLOMATOSIS - CASE-REPORTAND REVIEW OF IMAGING FINDINGS

Because of its indolent course, high recurrence rate, and risk of mali gnant transformation, mucinous biliary papillomatosis is an important consideration in the differential diagnosis of bile duct obstruction. We report a case of mucinous biliary papillomatosis and review the son ographic and other imaging findings previously reported in the literat ure. On sonography, these tumors appear as nonshadowing intrabiliary m asses that are clearly defined and associated with proximal biliary di latation. They may be multiple and associated with mucoid sludge. The imaging findings reflect the macroscopic appearance of a doughy papill iferous tumor of a bile duct. Associated findings include cholelithias is, choledocholithiasis, and gallbladder dysplasia. (C) 1998 John Wile y & Sons, Inc.