This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'A man was diagnosed to have myositis ossificans progressiva at the age of 20 years. He died five years later. What is the most probable cause of his death- \nSelect and explain. \nA. Starvation and chest infection, B. Myocarditis, C. Hypercalcemia, D. Hyperphosphatemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans is option 1.. Starvation and chest infection. Myositis ossificans progressiva It is a congenital condition characterized by the formation of masses of bone in the soft tissues with consequent progressive impairment of movement of the underlying joint or joints All joint motion is finally lost and the patient dies of intercurrent infection. No effective treatment is known Ref Harrison 17/e p2416', 'role': 'assistant'}]