title: Cholesteatoma of the concha bullosa: a case report.
abstract: BACKGROUND
  Cholesteatoma is a relatively common disease within the middle ear cavity, but rarely it manifests in the paranasal sinuses. There is, to the best of our knowledge, only one other published case of cholesteatoma inside the concha bullosa in the English language literature.
  
  
  METHODS
  An 81-year-old Caucasian woman was admitted to our hospital complaining of nasal obstruction, headache and diplopia. After endoscopic and radiological evaluation a transnasal endoscopic approach was chosen. The diagnosis of cholesteatoma was established by histopathological evaluation of the mass inside the concha bullosa.
  
  
  CONCLUSIONS
  Although it is rarely seen, cholesteatoma should be considered in the differential diagnosis of slow-growing and destructive paranasal masses.
authors.affiliation: Department of ENT Head and Neck Surgery, Izmir Tepecik Training and Research Hospital, Turkey. demirhanerhan@yahoo.com.
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Cukurova
authors.forename: Erhan
authors.initials: E
authors.lastname: Demirhan
authors.forename: Ilker B
authors.initials: IB
authors.lastname: Arslan
authors.forename: Suheyla
authors.initials: S
authors.lastname: Cumurcu