Good day Dr. I am Calvin, 20 years old, male. for almost a year I noticed that I have a lump on the upper part of my left testicle. I can feel that the affected is in the cord of the testicle, but my right part has not. I am not experiencing any pains at all, except for a discomfort sometimes of my left abdomen but not the testicles. Admittedly, I suffered a low blow injury about 2 years ago but when I go to see a physician and had ultrasound they said that I did not get any serious testicular injuries. What do you think is this dear doctor? Will it make ma unable to produce a child in the future? will it make me infertile? Thank you.