32 year old male patient presented with complaints of right side gradually progressive hard of hearing.
- No tinnitus, vertigo, ear ache, ear discharge.
- No noise exposure.
- No history of any ototoxic drugs.
- Right tympanic membrane could not be visualized. Right External auditory canal ?Polyp present. Left tympanic membrane intact
- CECT Temporal bone attached here.
What could be the provisional diagnosis?