Mr imaging of middle ear cholesteatomas

Kiyoshi Ishii, Shoki Takahashi, Toshimitsu Kobayashi, Ko Matsumoto, Tadashi Ishibashi

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We prospectively evaluated MR images of 14 patients who had chronic otitis media and who were suspected of having cholesteatomas on otologic examination and/or on high resolution CT. Cholesteatomas were verified in the middle ear and/or mastoid at surgery in nine patients. Cholesteatomas appeared isointense relative to gray matter on Tl-weighted spin echo MR images (T1WI) and hyperintense on T2-weighted spin echo MR images (T2WI) in eight patients. Two cholesterol granulomas appeared hyperintense on both T1WI and T2WI. In three patients with chronic otitis media the associated mixed granulation tissue and fluid collection was revealed as nonspecific, het-erogeneous signal intensity in two cases. In the third case the signal intensity was similar to that found in cholesteatomas.

Original languageEnglish
Pages (from-to)934-937
Number of pages4
JournalJournal of Computer Assisted Tomography
Volume15
Issue number6
DOIs
Publication statusPublished - 1991 Nov

Keywords

  • Cholesteatomas
  • Ears neoplasms
  • Magnetic resonance imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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