title: Computed Tomography Features of External Auditory Canal Cholesteatoma: A Pictorial Review.
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.
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore. Electronic address: ashchawla@gmail.com.
authors.forename: Ashish
authors.initials: A
authors.lastname: Chawla
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore.
authors.forename: Jerome Irai
authors.initials: JI
authors.lastname: Ezhil Bosco
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore.
authors.forename: Tze Chwan
authors.initials: TC
authors.lastname: Lim
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore.
authors.forename: Jagadish Narayana
authors.initials: JN
authors.lastname: Shenoy
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore.
authors.forename: Vijay
authors.initials: V
authors.lastname: Krishnan
mesh_terms: D002781:Cholesteatoma / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004424:Ear Canal / Q000000981:diagnostic imaging*; D004427:Ear Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D014057:Tomography, X-Ray Computed / Q000379:methods*