Question

Identify the condition of the given image:

• A. Acquired cholesteatoma
• B. Congenital cholesteatoma
• C. Rupture of tympanic membrane
• D. Keratosis obturans

Answer 1

The Correct Option is D

Step 1: The picture is keratosis obturans, an uncommon disorder of the external auditory canal stemming from defective migration of canal skin.
Step 2: Retained keratin packs the canal and erodes (resorbs) surrounding bone, leaving a circumferentially widened canal that exposes the tympanic annulus.
Step 3: The tympanic membrane stays largely intact, helping separate it from a perforation, and the canal bone loss with intact drum separates it from cholesteatoma of the middle ear.
Step 4: Putting these features together, the lesion is keratosis obturans rather than acquired/congenital cholesteatoma or a ruptured drum.
\[\boxed{\text{Keratosis obturans}}\]