File:Cholesteatoma - external auditory canal (Radiopaedia 88452-105096 Sagittal bone window 13).jpg

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Summary:

Description	Radiopaedia case ID: 88452 Image ID: 54792479 Image stack position: 13/60 Plane projection: Sagittal Aux modality: bone window Modality: CT System: Head & Neck Findings: There is a rather large mass of soft tissue attenuation centered within the bony portion of the left external auditory canal, resulting in significant canal expansion and marked circumferential canal wall erosion with multiple small predominantly peripheral bony fragments. Thinning and destructive changes of the tympanic and mastoid parts of the left temporal bone are noted, with a small amount of retained fluid within the left mastoid air cells. The mass erodes the left scutum, extending into the left middle ear cleft, encasing and slightly eroding the left middle ear ossicular chain, obliterating the left Prussak space, aditus ad antrum and mastoid antrum. Complete obliteration of the facial recess with thinning and erosion of the posterior genu and tympanic segment of the left facial nerve canal, suggestive of facial nerve involvement.
Date	Published: 9th Apr 2021
Source	https://radiopaedia.org/cases/cholesteatoma-external-auditory-canal
Author	Eid Kakish
Permission (Permission-reusing-text)	http://creativecommons.org/licenses/by-nc-sa/3.0/

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current	23:19, 12 August 2021		512 × 512 (83 KB)	Fæ (talk \| contribs)	Radiopaedia project rID:88452 (batch #7691-231 D13)

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