title: Trans-sacral resection of a solitary fibrous tumor in the pelvis: report of a case.
abstract: Solitary fibrous tumors (SFTs) develop most commonly in the pleura, although they have occasionally been reported to arise in the pelvic cavity. We report a case of an SFT presenting as a painless nodule in the pelvis of a 56-year-old woman. Histologically, the tumor was composed of spindle-shaped cells arranged without pattern, with short and narrow fascicles and interspersed bundles of thick collagen, and numerous blood vessels with a focally hemangiopericytoma-like appearance. Immunohistochemically, the tumor cells strongly expressed vimentin, CD34, and bcl-2. The tumor was excised via a trans-sacral approach, without preoperative transcatheter embolization, and the patient remains well more than 2 years after her operation. To our knowledge, this is the first case of an SFT in the pelvis, which was excised completely via a trans-sacral approach.
authors.affiliation: Department of Surgery, Fujita Health University, School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Katsuno
authors.forename: Koutarou
authors.initials: K
authors.lastname: Maeda
authors.forename: Tsunekazu
authors.initials: T
authors.lastname: Hanai
authors.forename: Harunobu
authors.initials: H
authors.lastname: Sato
authors.forename: Koji
authors.initials: K
authors.lastname: Masumori
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Koide
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Matsuoka
authors.forename: Tomohito
authors.initials: T
authors.lastname: Noro
authors.forename: Yasunari
authors.initials: Y
authors.lastname: Takakuwa
authors.forename: Ryouta
authors.initials: R
authors.lastname: Hanaoka
mesh_terms: D001707:Biopsy, Needle; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging / Q000379:methods; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000473:pathology* / Q000601:surgery*; D035583:Rare Diseases; D012445:Sacrococcygeal Region / Q000601:surgery*; D054364:Solitary Fibrous Tumors / Q000473:pathology* / Q000601:surgery*; D013514:Surgical Procedures, Operative / Q000379:methods; D016896:Treatment Outcome