The male reproductive system includes two testicles or testes. They produce sperm from germ cells and testosterone. More than 90% of the tumors develop in the germ cells of the testicles. There are two types of germ cell tumors, seminoma and non-seminoma. Each responds differently to treatment options.
Cancer of the testicles affects approximately 8,000 men each year in the United States. Unlike prostate cancer that tends to appear in older men, testicular cancer afflicts men between 20 and 30 years of age. But it has one of the highest cancer cure rates when detected early: 95%.
The first sign of testicular cancer may be a lump or swelling in one of your testicles that may or may not be painful. You may also feel heaviness or pain in the scrotum; the sack-like skin that contains the testicles as well as sharp pain in your lower abdomen. Testicular cancer that has gone into lymph nodes below the diaphragm may cause lower back pain, too.