title: A case of fibrous histiocytoma of the liver.
abstract: Malignant fibrous histiocytoma (MFH) is a rare disease. We describe a 68-year-old man admitted to the hospital because of malaise. On admission, hematologic and serum chemical examinations showed no abnormalities. A tumor measuring 6.0 x 6.0 x 5.5 cm was found in segment S6 of the right lobe of the liver. A computed tomographic scan of the abdomen revealed a mass surrounded by a capsule-like region with a nonuniform shadow at its margin. The mass contained a nonuniform low density area. A magnetic resonance imaging scan showed low intensity on T1-weighted images and high intensity on T2-weighted images. An angiogram of the abdomen revealed a tumor with a darkly stained margin during the venous phase. Partial resection of the liver, including S6 and part of S7, was performed. On histopathological examination, this case was characterized by a storiform pattern. The inside of the tumor showed a storiform-pleomorphic pattern with inflammatory cell infiltration and partial mucinous degeneration. On immunohistochemical studies, the tumor cells stained positively for CD6. The diagnosis was MFH.
authors.affiliation: Department of Surgery, Juntendo University, Izunagaoka Hospital, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Maekawa
authors.forename: K
authors.initials: K
authors.lastname: Yabuki
authors.forename: K
authors.initials: K
authors.lastname: Sato
authors.forename: Y
authors.initials: Y
authors.lastname: Tamasaki
authors.forename: H
authors.initials: H
authors.lastname: Maekawa
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.forename: A
authors.initials: A
authors.lastname: Hirano
authors.forename: M
authors.initials: M
authors.lastname: Eguchi
authors.forename: M
authors.initials: M
authors.lastname: Matsumoto
mesh_terms: D000368:Aged; D018219:Histiocytoma, Benign Fibrous / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000473:pathology; D008297:Male