This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Which of the following organs is not involved in Whipple's disease 
Select and explain. 
A. Hea, B. CNS, C. Lungs, D. GI tract
C: Lungs
Answer: C: Lungs 
Explanation: The organs in which these foamy macrophages can be seen are liver, small intestine, lymph nodes, hea,eyes,CNS,synvoial membrane of joints Refer Robbins 9/e p 792