MRI findings of a middle ear cholesteatoma in a dog

Nathaniel X Harran, Kate J Bradley, Natasha Hetzel, Kelly Blacklock, Michael J Day, Frances Barr

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

This article describes the MRI features of a middle ear cholesteatoma in an 8 yr old flat-coated retriever. Physical examination revealed pain on opening the jaw, and otoscopic examination showed tympanic membrane rupture associated with hyperplastic tissue at the entrance of the middle ear. Standard MRI sequences allowed for the identification of a severely expanded bulla containing material that was isointense to brain tissue on T1-weighted images and of mixed intensity on T2-weighted and fluid-attenuated inversion recovery sequences. No postcontrast enhancement of the content was present, but the lining of the bulla was partially enhanced. The images allowed evaluation of the surgical margins and the secondary changes due to the expansion of the mass. Surgery was performed and histopathology confirmed the presumptive diagnosis of cholesteatoma. In the present case, MRI appeared to serve as a good alternative to computed tomography for the diagnosis of cholesteatoma.

Original languageEnglish
Pages (from-to)339-43
Number of pages5
JournalJournal of the american animal hospital association
Issue number5
Publication statusPublished - 31 Jul 2012

Keywords / Materials (for Non-textual outputs)

  • Ablation Techniques/veterinary
  • Animals
  • Cholesteatoma, Middle Ear/diagnosis
  • Diagnosis, Differential
  • Dog Diseases/diagnosis
  • Dogs
  • Magnetic Resonance Imaging/veterinary
  • Male
  • Osteotomy/veterinary
  • Otitis Externa/diagnosis
  • Otitis Media/diagnosis
  • Radiography/veterinary
  • Treatment Outcome


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