of the surgery are the same as if the
is not removed, but occur less frequently. Hearing loss and dizziness may
occur along with injury to the lining or
of the brain. The
VII Nerve runs through the center of the
cavity and can be injured during surgery. This may
cause a facial paralysis. However, from the picture on the right, one can
see how this nerve can be easily damaged by the
cholesteatoma . Thus, once
should be surgically removed. Kos et al.
reported on the results for
canal wall down
He found the average pre-operative hearing loss was 52 dB.
Post-operatively the hearing was unchanged in 41%, improved in 31% and worse in
28%. Other complications were persistent vertigo and one case of facial
A long standing cholesteatoma can erode through the dura and into the brain or into the inner ear. The horizontal semicircular canal is the inner ear structure most prone to damage. Below is a link to a CT Scan of a cholesteatoma which produced a fistula of the horizontal semicircular canal. The patient had a chronic history of hearing loss and ear drainage. He recently, experienced a severe episode of vertigo from labyrinthitis .