Biliary intraductal papillary-mucinous neoplasm manifesting only as dilatation of the hepatic lobar or segmental bile ducts: imaging features in six patients.
OBJECTIVE
The purpose of this study was to evaluate the imaging features of intrahepatic biliary intraductal papillary-mucinous neoplasm manifesting only as dilatation of the lobar or segmental bile ducts without a visible mass to determine whether this type of cholangiocarcinoma can be recognized on the basis of distinct imaging features.


CONCLUSIONS
Intrahepatic biliary intraductal papillary-mucinous neoplasm can spread along the mucosa without forming a mass and can produce a large amount of mucin. Severe dilatation of the lobar or segmental intrahepatic bile ducts with crowding and severe atrophy of the hepatic parenchyma are helpful imaging findings.
Lim
Jae Hoon
JH
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-ku, Seoul, Korea.
Jang
Kee-Taek
KT
Choi
Dongil
D
D002288:Adenocarcinoma, Mucinous / Q000000981:diagnostic imaging*; D000236:Adenoma / Q000000981:diagnostic imaging*; D000368:Aged; D001650:Bile Duct Neoplasms / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D008107:Liver Diseases / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods*