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: Radiology
The nodular pattern often seen in the lungs following renal transplantation is thought to be due to – 
Select and explain. 
A. Fungus, B. Inafarcts, C. Cytomegalovirus, D. Autoimmune reaction
C: Cytomegalovirus
Answer: C: Cytomegalovirus 
Explanation: Interstitial pneumonia can cause reticulonodular pattern. CMV is the most common cause of interstitial pneumonia in a patient with a renal transplant.