title: Primary orbital hemangiopericytoma: a case report.
abstract: A case of primary orbital hemangiopericytoma is reported in a 31-year-old female presenting with progressive proptosis of the left eye and deteriorating diplopia over a period of 2 years. Orbital computed tomography revealed a superiorly located well-circumscribed extraconal mass. A 32x57x16 mm soft mass that appeared grossly encapsulated was removed intact via anterior orbitotomy. Histopathological examination disclosed it to be a hemangiopericytoma. The clinical importance is its potentially malignant behavior, with a high local recurrence rate in case of incomplete excision. Literature was reviewed.
authors.affiliation: Department of Ophthalmology, Veterans General Hospital-Taipei, Taiwan, R.O.C.
authors.forename: C C
authors.initials: CC
authors.lastname: Tsai
authors.forename: H C
authors.initials: HC
authors.lastname: Kau
authors.forename: S J
authors.initials: SJ
authors.lastname: Chen
authors.forename: W M
authors.initials: WM
authors.lastname: Hsu
authors.forename: J S
authors.initials: JS
authors.lastname: Wu
mesh_terms: D000328:Adult; D005260:Female; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D009918:Orbital Neoplasms / Q000175:diagnosis / Q000473:pathology*