Diseases of The Middle Ear
Cholesteatoma commonly perforates: (LQ)
|B||Sup. semicircular canal|
a. Cholesteatoma has the property to destroy the bone by virtue of the various enzymes released by it.
b. Structures immediately at the risk of erosion are:
- Long process of incus.?
- Fallopian canal containing facial nerve. Q
- Horizontal/lateral semicircular canal. Q