title: [Clinical analysis of sinonasal hemangiopericytoma].
abstract: OBJECTIVE
  To investigate the clinical features, therapeutic methods and therapeutic effects of sinonasal hemangiopericytoma.
  
  
  METHODS
  Clinical data of 6 patients with sinonasal hemangiopericytoma, diagnosed by pathology and immunohistochemistry between January 1990 and December 2012 were analyzed retrospectively. There were 4 males and 2 females, with a median age of 58 years. Clinical manifestation included epistaxis and nasal obstruction. These patients were operated on by nasal endoscopic surgery or endoscope-assisted surgery, of which 2 cases of tumor located in the nasal cavity underwent nasal endoscopic surgery and 4 cases of tumor located in the nasal cavity and sinuses underwent endoscope-assisted surgery.
  
  
  RESULTS
  All the patients were followed up for a period of 6 months to 7 years after operation. Two cases recurred and 4 cases didn't recurred. One case recurred 6 months after operation and underwent second operation, with no recurrence by further one year follow-up. Another case recurred 17 months after operation and underwent second operation, with recurrence by further 9 months follow-up. This patient lived with tumor over two years.
  
  
  CONCLUSIONS
  Hemangiopericytomas are rarely found in the sinonasal cavity. Nasal endoscopic or endoscope-assisted surgery provides satisfactory effect.
authors.affiliation: Department of Otorhinolaryngology, Sichuan Provincial People's Hospital, Chengdu 610072, China.
authors.forename: Qingjia
authors.initials: Q
authors.lastname: Gu
authors.forename: Gang
authors.initials: G
authors.lastname: Xu
authors.affiliation: Email: heganghegang@live.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: He
authors.forename: Jiangang
authors.initials: J
authors.lastname: Fan
authors.forename: Jingxian
authors.initials: J
authors.lastname: Li
authors.forename: Yong
authors.initials: Y
authors.lastname: Feng
authors.forename: Linhong
authors.initials: L
authors.lastname: Song
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity; D009669:Nose Neoplasms / Q000175:diagnosis / Q000628:therapy; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis / Q000628:therapy; D011379:Prognosis; D012189:Retrospective Studies