1 MCQs in ENT for NEET PG
A 32-year-old man presents with a 5-year history of painless foul-smelling otorrhea from the right ear and progressive hearing loss. Otoscopy reveals a posterosuperior marginal perforation with white pearly debris consistent with cholesteatoma. Pure-tone audiometry of the right ear is shown in the diagram. The pattern marked **A** (mixed hearing loss with air-bone gap plus sensorineural component) in this patient is most likely due to which of the following mechanisms?
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