If you find a lump in your testicle, don't panic. The chances are it's not cancer. There are many benign, harmless conditions that produce lumps. But any irregularity should be checked out, so make an appointment with your family doctor. If the lump is suspicious you will be referred to a specialist who will order diagnostic tests if he or she thinks they're necessary.
Surgery is the treatment for testicular cancer.
In Ontario a technique called lumpectomy is being tested. In this operation, suitable for very early cases, the tumor is removed from the testicle. But in most surgical treatments the whole testicle containing the tumor is removed. Although it sounds drastic, it is in fact a small price to pay. Most men's fertility is not affected by the removal of one testicle.