title: Glomangiopericytoma (sinonasal-type haemangiopericytoma).
abstract: BACKGROUND
  Glomangiopericytoma is a rare sinonasal tumour of perivascular myoid phenotype, which accounts for less than 1 per cent of all sinonasal tumours.
  
  
  OBJECTIVE
  Discussion of the clinical presentation, histopathological features and advances in the management of sinonasal and skull base glomangiopericytoma.
  
  
  METHODS
  A 32-year-old woman presented with worsening nasal obstruction, anosmia, severe frontal headaches and right-sided proptosis. Radiographic and endoscopic examination revealed a right-sided, vascular mass involving the nasal cavity, paranasal sinuses and anterior skull base. Histopathological features were consistent with a glomangiopericytoma. Complete endoscopic resection with free margins was achieved.
  
  
  CONCLUSIONS
  Glomangiopericytomas are rare, vascular, sinonasal tumours. Successful management depends on complete resection, traditionally achieved via an open approach. However, recent advances in endoscopic surgical approaches have enabled complete endoscopic resection of these tumours, minimising morbidity and facilitating subsequent surveillance of the operative site.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, The Royal Victoria Eye and Ear Hospital, Dublin, Republic of Ireland. C.Oosth@gmail.com
authors.forename: J C
authors.initials: JC
authors.lastname: Oosthuizen
authors.forename: S
authors.initials: S
authors.lastname: Kennedy
authors.forename: C
authors.initials: C
authors.lastname: Timon
mesh_terms: D000328:Adult; D005260:Female; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis / Q000601:surgery