This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Lymphocytic interstitial pneumoni s (LIP) 
Select and explain. 
A. Is uncommon in ver tically acquired HIV infection, B. Is due to a protozoal infection, C. Is seen on chest X-ray as a perihilar infiltra on in a butterfly distributi on, D. May be associated with hepatosplenomegaly
D: May be associated with hepatosplenomegaly
Answer: D: May be associated with hepatosplenomegaly 
Explanation: It is seen most commonly in children who have veically HIV infection. The chest X-ray findings are of a diffuse infiltration and some perihilar lymphadenopathy also. There may be associated hepatomegaly, generalised lymphadenopathy or pancreas. Steroid therapy is only necessary if symptomatic to reduce oxygen requirement and increase exercise tolerance.