title: Hemangiopericytoma arising in the greater omentum: report of a case.
abstract: Although hemangiopericytoma may arise in any anatomic site, it rarely develops in the greater omentum. To our knowledge, only ten cases have been reported to date in the English-language literature. We report herein an additional case of hemangiopericytoma arising in the greater omentum. A review of the reported cases suggests that surgical resection provides the only chance of cure and that a high mitotic index (>4/10 high-power fields) and a tumor size of > or =20 cm predict an unfavorable prognosis after resection.
authors.affiliation: Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata 951-8510, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Kaneko
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Shirai
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Wakai
authors.forename: Go
authors.initials: G
authors.lastname: Hasegawa
authors.forename: Ichiro
authors.initials: I
authors.lastname: Kaneko
authors.forename: Katsuyoshi
authors.initials: K
authors.lastname: Hatakeyama
mesh_terms: D000368:Aged; D005260:Female; D006393:Hemangiopericytoma / Q000473:pathology* / Q000601:surgery*; D006801:Humans; D009367:Neoplasm Staging; D009852:Omentum / Q000473:pathology* / Q000601:surgery*; D010534:Peritoneal Neoplasms / Q000473:pathology* / Q000601:surgery*; D011379:Prognosis