title: Diagnosis and endoscopic management of sinonasal schwannomas.
abstract: OBJECTIVE
  Survey the clinical symptoms, radiological features, management, and long-term outcomes of sinonasal and anterior skull base schwannomas.
  
  
  METHODS
  Retrospective review of patients with sinonasal schwannomas treated from June 2001 through January 2010 at two academic institutions.
  
  
  RESULTS
  There were 4 women and 3 men in this study. The mean age was 46 years (range 17-68). The mean tumor size was 2.4 cm (range 1.4-3.8 cm). Tumor locations included ethmoid sinuses (3), nasal cavity (2) and pterygopalatine fossa (2). Six patients had endoscopic resections, while 1 was approached and resected via a lateral rhinotomy. The mean follow-up was 2.8 years. There were no tumor recurrences during the study period.
  
  
  CONCLUSIONS
  Schwannomas of the paranasal sinuses and nasal cavity are uncommon tumors that can usually present with vague and nonspecific symptoms. Magnetic resonance imaging can suggest the diagnosis; however, a definitive diagnosis is made by correlation with histopathological findings. Treatment is complete surgical resection. This study illustrates the effectiveness of the endoscopic endonasal approach in the treatment of these benign tumors.
authors: Division of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA. jeffsuh@mednet.ucla.edu
authors: Jeffrey D
authors: JD
authors: Suh
authors: Vijay R
authors: VR
authors: Ramakrishnan
authors: Paul J
authors: PJ
authors: Zhang
authors: Arthur W
authors: AW
authors: Wu
authors: Marilene B
authors: MB
authors: Wang
authors: James N
authors: JN
authors: Palmer
authors: Alexander G
authors: AG
authors: Chiu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005005:Ethmoid Sinus / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D059747:Nasal Surgical Procedures; D009369:Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D044583:Neuroendoscopy; D009669:Nose Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D056739:Pterygopalatine Fossa / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D012189:Retrospective Studies; D019292:Skull Base Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D055815:Young Adult