This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
The posterosuperior retraction pocket, if allowed to progress, will lead to: 
Select and explain. 
A. Sensorineural hearing loss, B. Secondary cholesteatoma, C. Tympanosclerosis, D. Tertiary cholesteatoma
B: Secondary cholesteatoma
Answer: B: Secondary cholesteatoma 
Explanation: 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).