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Cancer Society of America | Testicular Cancer | Cause | Treatment | Symptoms | Diagnosis | Prevention, Early Detection |
American |
american |
Testicular cancers are uncommon malignancy in general population. However, primary testicular tumors are the most common solid malignant tumors in men between ages 20 and 35 years old. In the United States, incidence of testicular cancers is about 9,000 cases with about 300 to 400 deaths annually. The lifetime risk of Americans to develop testicular cancer is about 1 in every 265 and the risk of dying is just 1 in 5,000. Testicular cancers are mostly 95% germ cell tumors that are divided into two major types; pure seminoma and nonseminomatous germ cell tumors. These tumors are further subdivided into several subtypes depending on the histological features. The course and prognosis of the disease depend on to which subtype they fall. Testicular cancer has been studied for a long time, but the exact cause of the disease is still unknown. Scientists consider multiple factors that predisposes a patient to develop this germ cell-derived tumor. One factor is genetic predisposition. Several studies revealed that 1st degree relatives have higher risk of developing this cancer compared to the general population. A son of an affected patient has 5 times increased risk while a sibling of an affected patient has up to 8 times increased risk of developing the disease. A condition called cryptorchidism also carries high risk of developing this cancer. It is a condition wherein the testis fails to descend from the abdomen to the scrotum during the fetal period. This is also linked to exposure of diethylstilbestrol which is a chemical pointed out to be the cause of such condition. There are other risk factors correlated with higher risk to develop this disease, but none are more important than a prior history of testicular cancer. Patients who were already diagnosed to have testicular cancer have a 500-fold higher rate to develop second primary testicular tumor compared to the general population. |
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