Middle ear cholesteatoma extending into the petrous apex: Evaluation by CT and MR imaging

K. Ishii, S. Takahashi, K. Matsumoto, T. Kobayashi, T. Ishibashi, K. Sakamoto, T. Soda

研究成果: Article査読

24 被引用数 (Scopus)

抄録

CT and MR imaging findings were reviewed in four cases of acquired cholesteatoma of the middle ear that extended medially into the petrous apex and middle cranial fossa. In one case the lesion further extended anteromedially into the sphenoid sinus. CT demonstrated the lesions as nonenhancing hypodense masses with bone destruction, extending medially from the middle ear cavity to the petrous apex region. On MR imaging, the lesion was slightly hypointense relative to brain on T1-weighted images and hyperintense on T2-weighted images. MR imaging clearly delineated the extraaxial location of the lesion and associated brain displacement. The medial extension of the cholesteatomas seems to have proceeded via a detour around the bony labyrinth into the petrous apex region by following normal pathways of temporal bone pneumatization.

本文言語English
ページ(範囲)719-724
ページ数6
ジャーナルAmerican Journal of Neuroradiology
12
4
出版ステータスPublished - 1991
外部発表はい

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング
  • 臨床神経学

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