title: A case of gigantic fibrosarcoma of the buttocks involving the rectum.
authors.affiliation: National Cancer Center Hospital, Tokyo, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Asano
authors.forename: Norihiro
authors.initials: N
authors.lastname: Moriya
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Beppu
mesh_terms: D000368:Aged; D002081:Buttocks; D005260:Female; D005354:Fibrosarcoma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D012004:Rectal Neoplasms / Q000473:pathology*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology