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
Testis tumor is associated with secondary hydrocele in 
Select and explain. 
A. 1% of cases, B. 10% of cases, C. 20% of cases, D. 30% of cases
B: 10% of cases
Answer: B: 10% of cases 
Explanation: • Approximately 5-10% of testicular tumors may be associated with hydroceles.