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: Pediatrics
Giant cell (Hecht's) pneumonia is due to – 
Select and explain. 
A. CMV, B. Measles, C. Malaria, D. P. carinii
B: Measles
Answer: B: Measles 
Explanation: Primary giant cell or Hecht's pneumonia is seen in case of measles. It is a complication of measles and is seen in immunocompromised and malnourished patients.