This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Medicine
Post renal transplant lymphoma is mostly associated with 
Select and explain. 
A. EBV, B. CMV, C. Herpes simplex, D. HHV-6
A: EBV
Answer: A: EBV 
Explanation: EBV is a very common virus: about 9 in 10 adults have been infected with it. EBV infects B lymphocytes. Some cases of PTLD are not related to EBV (EBV-negative PTLD). They tend to occur months or years after transplant, when the risk of lymphoma is usually lower than it is in the early months after transplant. Ref Harrison20th edition pg 267