Hello doctor,
About a week ago, I found a punch in the groin which lasted for about 2-3 days. It was associated with pain also. After 2-3 days pain decreased as I examined myself. It was a small hard ball with some sort of tenderness, and on top of my testicle. But now, the mass is still there. I think it is something related to the starting of testicular cancer. Is it painless or painful? Please help.