Intrahepatic cholangiocarcinoma mimicking hepatic inflammatory pseudotumor.
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.
Kitajima
Kumiko
K
Department of Surgery, Jikei University School of Medicine, 3-25-8, Nishi-shinbashi, Minato-ku, Tokyo, 105-8471, Japan. Kmkktjm@aol.com
Shiba
Hiroaki
H
Nojiri
Takuya
T
Uwagawa
Tadashi
T
Ishida
Yuichi
Y
Ichiba
Noriatsu
N
Yanaga
Katsuhiko
K
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