title: Intrahepatic cholangiocarcinoma mimicking hepatic inflammatory pseudotumor.
abstract: A 50-year-old male with hepatitis B was referred for a small intrahepatic nodule. Magnetic resonance images raised strong suspicion of a benign lesion, such as an inflammatory pseudotumor, while the other radiological studies were equivocal. Furthermore, the high-intensity image on diffusion magnified-weighted imaging with a low B value strongly suggested a benign tumor. In spite of the absence of typical clinical or radiological findings, needle biopsy revealed an intrahepatic cholangiocarcinoma (ICC). The diagnosis of peripheral ICC rich in fibrous tissue seems to require needle biopsy for pathological examination with immunohistochemical staining because it frequently mimics other diseases, including benign tumors.
authors: Department of Surgery, Jikei University School of Medicine, 3-25-8, Nishi-shinbashi, Minato-ku, Tokyo, 105-8471, Japan. Kmkktjm@aol.com
authors: Kumiko
authors: K
authors: Kitajima
authors: Hiroaki
authors: H
authors: Shiba
authors: Takuya
authors: T
authors: Nojiri
authors: Tadashi
authors: T
authors: Uwagawa
authors: Yuichi
authors: Y
authors: Ishida
authors: Noriatsu
authors: N
authors: Ichiba
authors: Katsuhiko
authors: K
authors: Yanaga
mesh_terms: D001650:Bile Duct Neoplasms / Q000175:diagnosis*; D001653:Bile Ducts, Intrahepatic; D018281:Cholangiocarcinoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006104:Granuloma, Plasma Cell / Q000175:diagnosis*; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged