2. Changes in Your Testicles
"If you notice a lump, heaviness, or any other change in your testicle, never delay having it looked at," says Herbert Lepor, MD, urology chairman at New York University Langone Medical Center. "Unlike prostate cancer, which grows slowly, testicular cancer can take off overnight." Your doctor will look for any problems with a physical exam, blood tests, and an ultrasound of your scrotum.