Presentation
Right ear fullness.
Patient Data
Age: 10 years
Gender: Female
From the case:
External auditory canal cholesteatoma
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There is a soft tissue mass filling the external auditory canal (EAC) with erosion of its posterior wall as well as erosion with partial destruction of the tympanic part of temporal bone. The tympanic membrane is intact with no extension to the middle ear.
Normal middle and inner ear structures.
Case Discussion
CT feature of a soft tissue mass of the EAC with bony erosion suggestive of cholesteatoma.
The main differential diagnosis is Keratosis obturans (but no bony erosion, as opposed to EAC cholesteatoma).
Additional contributor: C. Boukaaba, MD
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