title: Endoscopic Resection of Sinonasal Tract Schwannoma: Presentation, Treatment, and Outcome in 10 Cases.
abstract: BACKGROUND
  Sinonasal schwannoma (SNS) is a rare sinonasal tract tumor whose presentation is similar to that of other benign nasal tumors. Very few case series appear in the literature. This study aims to describe the presentation, treatment, and outcome of 10 SNS cases from 3 referral centers.
  
  
  METHODS
  All SNS cases were analyzed retrospectively. Patient demographics, tumor data, surgical procedures, and outcome were recorded.
  
  
  RESULTS
  Five males and 5 females (mean age, 49.1 ± 21.4 years) were included in the study. The tumor was on the left side in 9 patients and on the right side in 1. It originated in the middle turbinate in 4 cases, the ethmoid and sphenoid sinuses in 2 cases, and the nasal septum and infratemporal fossa in 1 case each. Tumor resection was done endoscopically in all cases, and there was no need for an external procedure, and 5 patients did not require a sinusotomy. All 10 patients remained disease-free after a mean follow-up of 65.3 months (range, 2-120 months).
  
  
  CONCLUSIONS
  Safe and effective endoscopic resection of SNS is feasible. If the tumor is contained within the nasal cavity, simple tumor excision without sinusotomy can be enough to resect the tumor. In more extensive disease, a wider endoscopic approach may be needed, but an external approach was not necessary in this series.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Barzilai Medical Center, Ashkelon, Israel boazforer@gmail.com.
authors.forename: Boaz
authors.initials: B
authors.lastname: Forer
authors.affiliation: Accent Ear Nose Throat Specialist Group, Mount Elizabeth Medical Centre, Singapore.
authors.forename: Leong Jern
authors.initials: LJ
authors.lastname: Lin
authors.affiliation: Mount Elizabeth Novena Specialist Centre, Singapore.
authors.forename: Dharmbir Singh
authors.initials: DS
authors.lastname: Sethi
authors.affiliation: A.R.M Specialist Group-Assuta Medical Center, Tel Aviv, Israel.
authors.forename: Roee
authors.initials: R
authors.lastname: Landsberg
mesh_terms: D000328:Adult; D000368:Aged; D004210:Dissection / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000473:pathology / Q000601:surgery; D057605:Natural Orifice Endoscopic Surgery / Q000379:methods*; D009442:Neurilemmoma / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D010256:Paranasal Sinuses / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome
keywords: endoscopic; nasal; outcome; resection; schwannoma; sinus