title: Endoscopic management of pediatric sinonasal schwannoma: case report.
abstract: OBJECTIVE
  To describe an extremely rare pediatric sinonasal schwannoma, and to reviewmanagement strategies and relevant literature.
  
  
  METHODS
  Case report of pediatric sinonasal schwannoma, that was imaged with computed tomography and magnetic resonance imaging and managed endoscopically. Immunohistochemical analysis was performed to determine pathology.
  
  
  RESULTS
  A 12-year-old girl presented with a 2-month history of progressive left exophthalmos. Imaging studies showed a large heterogeneous tumour arising from the ethmoid sinus and extending to the base of the skull and to the orbital cavity. The lesion was removed with an endonasal radical excision. The final pathological diagnosis was schwannoma. There was no tumour recurrence or any major complication during the 2-year follow up.
  
  
  CONCLUSIONS
  Schwannoma should be considered in the differential diagnosis for pediatric patients with intranasal masses. Depending on the location and extent of the tumour, endonasal endoscopic excision could be a suitable management strategy.
authors: M S
authors: MS
authors: Chou
authors: H K
authors: HK
authors: Chung
authors: Y A
authors: YA
authors: Tsou
authors: J J
authors: JJ
authors: Chen
authors: M H
authors: MH
authors: Tsai
authors: C I
authors: CI
authors: Jan
mesh_terms: D002648:Child; D004724:Endoscopy / Q000379:methods*; D005005:Ethmoid Sinus / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D009915:Orbit / Q000000981:diagnostic imaging / Q000601:surgery*; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D019291:Skull Base / Q000000981:diagnostic imaging / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome