title: Isolated inverting papilloma of the sphenoid sinus.
abstract: OBJECTIVE
  Primary inverting papilloma of the sphenoid sinus is rare. We present a case of inverting papilloma with isolated involvement of the sphenoid sinus and discuss the incidence, clinical presentation, radiographic features, histological findings, and management of patients with this disease.
  
  
  METHODS
  Case report.
  
  
  METHODS
  The medical records, films, and pathology slides of a patient with isolated inverting papilloma of the sphenoid sinus seen at University of California Los Angeles Medical Center were reviewed. The clinical presentation, radiographic features, histopathological findings, treatment, and outcome of the case were examined.
  
  
  RESULTS
  A single case of inverting papilloma with isolated involvement of the sphenoid sinus is presented. Headache and diplopia were the presenting complaints, as is often seen with other isolated sphenoid sinus lesions. Endoscopic intranasal sphenoid sinusotomy was performed, and no evidence of recurrent disease has been seen after 6 months of follow-up.
  
  
  CONCLUSIONS
  Isolated inverting papilloma of the sphenoid sinus is a rare phenomenon. In contrast to the vast majority of cases that present with nasal complaints (i.e., unilateral nasal obstruction, epistaxis) because of involvement of the lateral nasal wall, the clinical presentation of inverting papillomas confined to the sphenoid sinus is often nonspecific and insidious, with visual deficits being the predominant feature. Nevertheless, functional endoscopic intranasal sphenoidotomy remains an effective mode of treatment for patients with these lesions.
authors.affiliation: Division of Head and Neck Surgery, University of California Los Angeles Medical Center, 90095-1624, USA. jtlee@ucla.edu
authors.forename: Jivianne T
authors.initials: JT
authors.lastname: Lee
authors.forename: Sunita
authors.initials: S
authors.lastname: Bhuta
authors.forename: Robert
authors.initials: R
authors.lastname: Lufkin
authors.forename: Dan J
authors.initials: DJ
authors.lastname: Castro
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D004724:Endoscopy / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D018308:Papilloma, Inverted / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D013101:Sphenoid Sinus; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome