<prompt> The posterosuperior retraction pocket, if allowed to progress, will lead to:Sensorineural hearing lossSecondary cholesteatomaTympanosclerosisTertiary cholesteatoma  <response>: The option b should have been primary cholesteatoma and not secondary.Secondary cholesteatoma occurs due to migration of squamous epithelium through a preexisting perforation such as poslerosuperior marginal or total perforation as occurs after acute necrotising otitis media. There is no term like tertiary cholesteatoma as given in option d. 