ENT Most difficult site to remove cholesteatoma, i.e. sinus tympani is related with: A Tympanic segment of facial nerve B Mastoid segment of facial nerve C Epitympanum D Hypotympanum 💡 Explanation Most difficult site to remove cholesteatoma, i.e. sinus tympani is related with: ✓ Correct Answer: B. Mastoid segment of facial nerve