<prompt> A man was diagnosed to have myositis ossificans progressive at the age of 20 years. He died five years later. What is the most probable cause of his death -Starvation and chest infectionMyocarditisHypercalcemiaHyperphosphatemia  <response>: The most common causes of death in patients with fibrodysplasia ossificans progressiva were cardiorespiratory failure from thoracic insufficiency syndrome 54; median age, forty-two years and pneumonia 15; median age, fortyyears. 