When doctors diagnosed Armstrong with testicular cancer, he and his then wife knew they still wanted a family, so the decided to store his sperm in order to get pregnant later by artificial insemination.
Other body systems are affected as well: myotonic dystrophy may cause cataracts, retinal degeneration, low IQ, frontal balding, skin disorders, testicular atrophy, sleep apnea, and insulin resistance.
The other testicle is also secured during the surgery to prevent future testicular torsion, because children who have had one episode of testicular torsion are likely to experience it again.
Probably not if you ask Lance's wife at the time, Kristin Richards who is the mother of his three children and the woman who had seen him through his struggle with testicular cancer.
Of those cases that do not correct themselves naturally, intervention is very important, because undescended testes increase the likelihood of sterility and testicular cancer.