title: [A case of acute progressive primary inflammatory fibrosarcoma of the retroperitoneum].
abstract: A 70-year-old man with liver cirrhosis presented to us with abdominal distention. Computed tomography revealed a giant retroperitoneal tumor. Examination of a biopsy specimen led to a diagnosis of primary inflammatory fibrosarcoma of the retroperitoneum. However, disease progression was rapid, and the patient died 6 weeks after the onset of the disease. Autopsy revealed that the tumor arose from the retroperitoneum and infiltrated the omentum and mesentery. Prognosis of inflammatory fibrosarcoma is poor if resection is incomplete. Establishment of treatment for unresectable cases is necessary.
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine.
authors.forename: Midori
authors.initials: M
authors.lastname: Hirayama
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakagawara
authors.forename: Takashi
authors.initials: T
authors.lastname: Miyata
authors.forename: Toshimi
authors.initials: T
authors.lastname: Takahashi
authors.forename: Naoki
authors.initials: N
authors.lastname: Matsumoto
authors.forename: Shunichi
authors.initials: S
authors.lastname: Matsuoka
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ogawa
authors.forename: Mitsuhiko
authors.initials: M
authors.lastname: Moriyama
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Nakata
authors.forename: Makio
authors.initials: M
authors.lastname: Kobayashi
mesh_terms: D000208:Acute Disease; D000368:Aged; D017809:Fatal Outcome; D005354:Fibrosarcoma / Q000473:pathology*; D006801:Humans; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000473:pathology*