1. If possible, stand in front of a mirror. Check for any swelling on the scrotal skin.
2. Examine each testicle with both hands. Place the index and middle fingers under the testicle with the thumbs placed on top. Roll the testicle gently between the thumbs and fingers -- you shouldn't feel any pain when doing the exam. Don't be alarmed if one testicle seems slightly larger than the other, that's normal.
3. Find the epididymis, the soft, tubelike structure behind the testicle that collects and carries sperm. If you are familiar with this structure, you won't mistake it for a suspicious lump. Cancerous lumps usually are found on the sides of the testicle but can also show up on the front. Lumps on or attached to the epididymis are not cancerous.
4.If you find a lump on your testicle or any of the other signs of testicular cancer listed below, see a doctor, preferably a urologist, right away. The abnormality may not be cancer, but if it is testicular cancer, it will spread if it is not stopped by treatment. Even if it is something else like an infection, you are still going to need to see a doctor. Waiting and hoping will not fix anything. Please note that free floating lumps in the scrotum that are not attached in any way to a testicle are not testicular cancer. When in doubt, get it checked out - if only for peace of mind