Testicular tumor

Testicular tumors account for 1% to 2% of male malignancies and are divided into primary and secondary types. The vast majority are primary and are divided into two major categories: germ cell tumors and non-germ cell tumors. Germ cell tumors occur in the reproductive epithelium of the seminiferous tubules, accounting for 90% to 95% of testicular tumors. Among them, seminoma is the most common, with a slower growth rate and a better prognosis. Teratocarcinoma, chorionic epithelial cancer, etc. are relatively rare, but have a high degree of malignancy, and lymphatic and hematogenous metastasis occur earlier, with a poor prognosis. Non-germ cell tumors occur in testicular mesenchymal cells, accounting for 5% to 10%, and originate from testicular mesenchymal cells such as fibrous tissue, smooth muscle, blood vessels, and lymphoid tissue. Secondary testicular tumors are rare.