Ossicular chain fixation refers to the presence of fibrous tissue (chronic adhesive otitis media) which usually appears as a non-calcified, soft tissue density encasing some or all of the ossicular chain.
It may be present in the mesotympanum and/or epitympanum yet it usually occurs in the niche of the oval window forming a ‘‘peristapedial tent’’.
Clinically the patient complains of conductive hearing loss in the setting of chronic otomastoiditis and dry ear.
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