Which of the following structures is not at immediate risk of erosion by cholesteatoma ?
Ans. is 'd' i.e., Base plate of stapes Cholesteatoma has the propey to destroy the bone by viue of the enzymes released by it. Structures immediately at the risk of erosion are : - Long process of incus. Fallopian canal containing facial nerve. Horizontal / lateral semicircular canal
Long process of incus
Fallopian canal containing facial nerve
Horizontal/ lateral semicircular canal
Base plate of stapes