NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,957 terms related to cancer and medicine.
- testicular cancer
- listen (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.