NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,399 terms related to cancer and medicine.
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- 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.