Case list for Intrabiliary Mucin Producing Neoplasia (IMPN)
There are 2 CT cases with this diagnosis.
CT of the abdomen shows markedly dilated right sided intrahepatic ducts, related to mucin production. Biopsy revealed intrabiliary mucin producin neoplasm.
Massive bile duct dilatation is due to mucin production of the tumors, which are better seen on MR than CT.
CT shows numerous small confluent adenomas (papillomatosis) predominantly in the left intrahepatic duct, but also in the common bile duct. Note distention of biliary system due to mucin production of biliary tumors. Histology showed cholangiocarcinoma with underlying intrabiliary mucin producing neoplasia (IMPN).
Courtesy Jae Ho Byun MD, PhD, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.