This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'A characteristic feature of TB otitis media: \nSelect and explain. \nA. Multiple perforations in TM, B. Mastoiditis, C. Middle ear effusion, D. Ear discharge', 'role': 'user'}, {'content': 'Answer: A \nExplanation: TB otitis media is mostly secondary to pulmonary TB.\nMore common in children and young adults. Patients have painless ear discharge which may be foul smelling and severe conductive hearing loss which is out of proportion to symptoms.\nOn examination, multiple perforations are seen on the tympanic membrane, pale granulation tissue in the middle ear and there may be facial nerve palsy. Investigations include the culture of the discharge. Histopathological examination of the granulation tissues and chest X-ray for ruling out pulmonary TB.\nTreatment is with Antitubercular drugs.', 'role': 'assistant'}]