The incidence of tympanogenic labyrinthitis ossificans

J Laryngol Otol. 2014 Jul;128(7):618-20. doi: 10.1017/S002221511400111X.

Abstract

Objective: To estimate the incidence of tympanogenic labyrinthitis ossificans.

Methods: The records of patients treated with mastoidectomy for various tympanogenic aetiologies from January 2007 to December 2011 were retrospectively reviewed. Patients whose high-resolution computed tomography scans showed evidence of labyrinthine calcification of the temporal bone were enrolled. Patients with a history of head and neck cancer, meningitis, and otosclerosis, and patients with cochlear implants, were excluded from this study.

Results: A total of 195 patients were enrolled in this study; 4 of the patients presented with calcification in the inner ear. Therefore, the incidence of tympanogenic labyrinthitis ossification was 2 per cent. The computed tomography findings revealed: (1) cochlear calcifications of the basal and middle turn in two patients; and (2) vestibular, superior semicircular canal, posterior semicircular canal and lateral semicircular canal calcification in one, four, three and two patients, respectively.

Conclusion: The incidence of tympanogenic labyrinthitis ossification in patients who had undergone a mastoidectomy was 2 per cent.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Child
  • Female
  • Follow-Up Studies
  • Humans
  • Incidence
  • Labyrinthitis / diagnostic imaging
  • Labyrinthitis / epidemiology*
  • Labyrinthitis / surgery
  • Male
  • Mastoid / surgery
  • Middle Aged
  • Ossification, Heterotopic / diagnostic imaging
  • Ossification, Heterotopic / epidemiology*
  • Ossification, Heterotopic / surgery
  • Retrospective Studies
  • Risk Factors
  • Taiwan / epidemiology
  • Tomography, X-Ray Computed
  • Tympanic Membrane / pathology*
  • Young Adult