Cemento-ossifying fibroma of the petromastoid region: case report and review of the literature

J Laryngol Otol. 1997 Feb;111(2):152-5. doi: 10.1017/s0022215100136709.


The cemento-ossifying fibroma (COF) is a mesodermal, non-odontogenic tumour of ectopic multipotential periodontal membrane blast cells. It is aggressive, locally destructive, and has a high recurrence rate. A case report of COF of the petromastoid region is presented. This location has not been described until now. Trauma may act as a trigger to sudden growth of the atopic periodontal tissue. Due to the aggressive behaviour of this tumour and its frequent recurrence radical surgery is needed.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Adult
  • Bone Neoplasms / pathology*
  • Fibroma, Ossifying / pathology*
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Mastoid*
  • Petrous Bone*
  • Tomography, X-Ray Computed