Testicular cancer is cancer that develops in the testicles, a part of the male reproductive system. The main function of the testes is to produce male sex hormones (testosterone) and sperm. Testicular cancer can invade one or both testicles.Globally testicular cancer affected about 686,000 people in 2015. That year it resulted in 9,400 deaths up from 7,000 deaths in 1990. Rates are lower in the developing than the developed world.Cancer of the testicle is 1 of the less common cancers, and tends...
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