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: Medicine
[{'content': 'Kartagener’s syndrome is characterized by A/E \nSelect and explain. \nA. Situs Solius, B. Dextrocardia, C. Chronic sinusitis, D. Situs inversus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Kartagener's syndrome is characterized bv triad of:-\n\xa0Situs inversus\n\xa0Chronic sinusitis\nBronchiestasis It is a subset of primary ciliary dyskinesia Primary ciliary dyskinesia\nPrimary ciliary dyskinesia (PCD, also called the immotile-cilia syndrome) is characterized by congenital impairment of mucociliary clearance (MCC).\n\xa0Clinical manifestations include:-\n\xa0Chronic cough\n\xa0Chronic rhinitis and\nChronic sinusitis\nOtitis and otosalpingitis (common in childhood)\n\xa0Nasal polyposis and agenesis of the frontal sinuses", 'role': 'assistant'}]