Pronunciation: (tes-TIH-kyoo-ler KAN-ser)
Cancer that forms in tissues of one or both testicles. Testicular cancer is most common in young or middle-aged men. Most testicular cancers begin in germ cells (cells that make sperm) and are called testicular germ cell tumors.
Source: NCI Dictionary of Cancer Terms
Caption: Anatomy of the male reproductive and urinary systems, showing the testicles, prostate, bladder, and other organs.2006-04-20 Date last modified: 2011-04-12