Which of the following structures is not at immediate risk of erosion by cholesteatoma -: (A) Long process of incus, (B) Fallopian canal containing facial nerve, (C) Horizontal/lateral semicircular canal, (D) Base plate of stapes
Answer is D. Ans. is 'd' i.e., Base plate of stapes o Cholesteatoma has the property to destroy the bone by virtue of the enzymes released by it.o Structures immediately at the risk of erosion are: -Long process of incus.Fallopian canal containing facial nerve.Horizontal / lateral semicircular canal