Most difficult site to remove cholesteatoma in sinus tympani is related with –
Correct Answer: Posterior facial ridge
Description: The sinus tympani (Posterior facial ridge) is the posterior extension of the mesotympanum and lies deep to both the promontory and facial nerve.
The medial wall of sinus tympani becomes continuous with the posterior portion of the medial wall of the tympanic cavity. This is the worst region for access because it is above pyramid, posterior to intact stapes and medial to facial nerve.
A retro facial approach via mastoid is not possible because the posterior semi circular canal blocks the access.
Category:
ENT
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now