External auditory canal cholesteatoma: clinical and imaging spectrum.

External auditory canal cholesteatoma: clinical and imaging spectrum. Research Abstract Details 

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External auditory canal cholesteatoma: clinical and imaging spectrum. Abstract Text:

Marta E Heilbrun,Karen L Salzman,Christine M Glastonbury,H Ric Harnsberger,Richard J Kennedy,Clough Shelton,

BACKGROUND AND PURPOSE: Cholesteatoma is an inflammatory lesion of the temporal bone that uncommonly involves the external auditory canal (EAC). In this large case series, we aimed to define its imaging features and to determine the characteristics most important to its clinical management. METHODS: Thirteen cases of EAC cholesteatoma (EACC) were retrospectively reviewed. Clinical data were reviewed for the history, presentation, and physical examination findings. High-resolution temporal bone CT scans were examined for a soft-tissue mass in the EAC, erosion of adjacent bone, and bone fragments in the mass. The middle ear cavity, mastoid, facial nerve canal, and tegmen tympani were evaluated for involvement. RESULTS: Patients presented with otorrhea, otalgia, or hearing loss. Eight cases were spontaneous, and five were postsurgical or post-traumatic. CT imaging in all 13 cases showed a soft-tissue mass with adjacent bone erosion. Intramural bone fragments were identified in seven cases. This mass most often arose inferiorly (n = 8) or posteriorly (n = 8), but it was circumferential in two cases. We noted middle ear extension (n = 5), mastoid involvement (n = 4), facial canal erosion (n = 2), and tegmen tympani dehiscence (n = 1). CONCLUSION: Temporal bone CT shows EACC as a soft-tissue mass within the EAC, with adjacent bone erosion. Bone fragments may be present within the mass. The cholesteatoma may extend into the mastoid or middle ear, or it may involve the facial nerve canal or tegmen tympani. Recognition of this entity and its possible extension is important because it may influence clinical management.

External auditory canal cholesteatoma: clinical and imaging spectrum. Publishing Authors By Initials

ME Heilbrun,KL Salzman,CM Glastonbury,HR Harnsberger,RJ Kennedy,C Shelton,

For similar tomography, x-ray computed research abstracts see: tomography, x-ray computed research

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External auditory canal cholesteatoma: clinical and imaging spectrum. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJNR. American journal of neuroradiology

VOLUME: 24

Page Numbers: 751-6

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ISSN: 0195-6108

DAY: 14

MONTH: Apr

YEAR: 2003

External auditory canal cholesteatoma: clinical and imaging spectrum. Information

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LANGUAGE: eng

NlmUniqueID: 8003708

External auditory canal cholesteatoma: clinical and imaging spectrum. Keywords Mesh Terms:

KEYWORDS: Tomography, X-Ray Computed

MESH TERMS: radiography

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Grant and Affiliation Information for External auditory canal cholesteatoma: clinical and imaging spectrum.

AFFILIATION: Department of Radiology, Division of Neuroradiology, University of Utah School of Medicine, Salt Lake City, USA.

Country: United States

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MEDLINETA: AJNR Am J Neuroradiol

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