Otosclerosis

Case contributed by David Matthews
Diagnosis certain

Presentation

Left sided hearing loss.

Patient Data

Age: 41
Gender: Female

CT mastoids.

ct

Lucency at the anterior margin of the left oval window and anterior to the vestibule.  There is subtle patchy lucency in peri-cochlear bone.  

Case Discussion

Appearances consistent with left fenestral and cochlear otosclerosis. Differential for cochlear otosclerosis would include otosyphilis.

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