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: Surgery
Testicular tumor in man aged 70 years is most likely to be 
Select and explain. 
A. Sertoli cell tumor, B. Lymphoma, C. Yolk sac tumors, D. Teratoma
B: Lymphoma
Answer: B: Lymphoma 
Explanation: Lymphoma is common in old age patients.