Primary intraosseous dermoid cyst of the mastoid
Findings:A well-defined, fat-containing, non-enhancing, expansile mass lesion is seen centred in the right mastoid process, extending anteriorly to involve the...
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CT Mastoid
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External auditory canal osteoma
Findings:Bony density lesion attached to the posteroinferior wall of the right external auditory canal through a stalk measuring approximately 7... -
Medial canal fibrosis
Findings:There is a crescentic band of soft tissue filling the medial external auditory canals and abutting the tympanic membranes, with... -
Stapes prosthesis – medial migration
Findings:Medially migrated stapes prosthesis is evident traversing the oval window on the right side, consistent with vestibular perforation.The external auditory... -
External auditory canal cholesteatoma
Findings:The ear pinna is unremarkable. There is soft tissue thickening along the cartilaginous and bony left external auditory canal, particularly...