title: [Sinonasal hemangiopericytoma: a case report].
abstract: OBJECTIVE
  To define clinical, histological and radiological features of sinonasal hemangiopericytoma (SNHPC) and to describe its therapeutic management.
  
  
  METHODS
  A case of SNHPC (47 year old man) of the left nasal cavity underwent endoscopic sinus surgery at our institution. This case is reported and discussed with a review of the literature.
  
  
  CONCLUSIONS
  SNHPC is a low grade malignant vascular tumour. The intra-nasal location is very rare. This unusual tumour of the nasal cavity has a specific clinical behaviour and prognosis. Diagnosis is confirmed by histological studies with immunohistochemical methods. Vimentin and SMA markers are reported positive in 98% and 92% of cases, respectively. Work up includes MRI and CT scan in order to assess the tumour extent. Angiography is useful to assess the vascularization and preoperative embolization reduces the intra-operative bleeding of large tumours. The gold standard treatment is surgery and the aim is to perform a wide excision with tumour free margins. Surgery can be performed by endoscopic techniques in patients without extra-nasal extension. Radiotherapy is advised for cases of suspect or positive margins. Post-treatment follow up focuses on lifelong endoscopic surveillance. Metastases are rare but recurrences can occur many years postoperatively. The treatment of recurrence is also surgical.
authors.affiliation: Institut Clairval de Chirurgie ORL (ICCORL), Centre Hospitalier Privé Clairval, Marseille, France. f.facon@wanadoo.fr
authors.forename: F
authors.initials: F
authors.lastname: Facon
authors.forename: M
authors.initials: M
authors.lastname: Sanjuan
authors.forename: J
authors.initials: J
authors.lastname: Paris
authors.forename: Ch
authors.initials: Ch
authors.lastname: Van Haverbeke
authors.forename: P
authors.initials: P
authors.lastname: Dessi
mesh_terms: D005005:Ethmoid Sinus / Q000473:pathology* / Q000601:surgery; D006393:Hemangiopericytoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010255:Paranasal Sinus Neoplasms / Q000473:pathology* / Q000601:surgery