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Computed Tomography Features of External Auditory Canal Cholesteatoma: A Pictorial Review
Ashish Chawla1, Jerome Irai Ezhil Bosco1, Tze Chwan Lim1
1Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore.
Abstract:
Computed tomography (CT) is widely used for evaluation of patients with otologic conditions. External auditory canal cholesteatoma (EACC), although rare, demonstrates characteristic CT appearance. Moreover, the accurate extent of involvement cannot be accurately assessed clinically. This pictorial review aims to illustrate the spectrum of CT features of EACC and highlight the key features that are useful for making an accurate diagnosis of this condition. We have also discussed the radiological and clinical differential diagnoses of external auditory canal lesions that can be mistaken for an EACC.
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