Otosclerosis
Updates to Study Attributes
There is bilateral left greater than right fenestral and cochlear otospongiosis as manifested by arc like-like hypo hypodensities starting starting at the fissula ante fenestram and surrounding the cochlea and vestibule, extending into the the anterior wall of the internal auditory canals.
There is also partial opacification of the basal turn of the left cochlea causing stenosis of the round window niche.
Image CT (bone window) ( update )
Image CT (bone window) ( update )
Updates to Case Attributes
This is an advanced case of otosclerosis. There is involvement of fissula ante fenestram, oval window, round window and the otic capsules. The left side is showing both fenestral and cochlear otosclerosis.
Otosclerosis is is a disease of bony the bony labyrinth. It starts at the fissula ante ante fenestram and spreads posteriorly to to involve the oval window and then is called the fenestral type.
If it progresses it will involve the round window, pericochlear region and the otic capsule and then it is called the cochlear type.
This case is very is very advanced because the lucencies surrounding the otic capsule, and spreading to the anterior wall of the IACs. There is also bony overgrowth of the basal turn of the cochlea obliterating the round window niche.
-<p>This is an advanced case of <a href="/articles/otosclerosis">otosclerosis</a>. There is involvement of fissula ante fenestram, oval window, round window and the otic capsules. The left side is showing both fenestral and cochlear otosclerosis.</p><p>Otosclerosis is a disease of bony labyrinth. It starts at the fissula ante fenestram and spreads posteriorly to involve oval window and then is called the fenestral type.</p><p>If it progresses it will involve the round window, pericochlear region and the otic capsule and then it is called the cochlear type.</p><p>This case is very advanced because the lucencies surrounding the otic capsule, and spreading to the anterior wall of the IACs. There is also bony overgrowth of the basal turn of the cochlea obliterating the round window niche.</p>- +<p>This is an advanced case of <a href="/articles/otosclerosis">otosclerosis</a>. There is involvement of fissula ante fenestram, oval window, round window and the otic capsules. The left side is showing both fenestral and cochlear otosclerosis.</p><p>Otosclerosis is a disease of the bony labyrinth. It starts at the fissula ante fenestram and spreads posteriorly to involve the oval window and then is called the fenestral type.</p><p>If it progresses it will involve the round window, pericochlear region and the otic capsule and then it is called the cochlear type.</p><p>This case is very advanced because the lucencies surrounding the otic capsule, and spreading to the anterior wall of the IACs. There is also bony overgrowth of the basal turn of the cochlea obliterating the round window niche.</p>
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