Until survivor Lance Armstrong triumphed in this summer's Tour de France bicycle race, testicular cancer didn't get a lot of press. One likely reason is that men hate to think about a malignancy in that vital and exceedingly sensitive part of the body. The treatment--surgical removal of the testicle--is even worse to contemplate. But another reason is that testicular cancer is relatively rare: only 7,400 cases will be diagnosed in the U.S. next year, representing 1% of new male cancers. Prostate cancer is 30 times as common.
Although testicular cancer is fairly easy to treat, as cancers go, it is on...