Final answer:
A Sertoli cell tumor is a type of testicular tumor that may be benign or malignant and arises from the cells supporting sperm production in the testes. Biopsy is important for diagnosis.
Step-by-step explanation:
A Sertoli cell tumor is a type of neoplasm that occurs in the testes. Testicular cancer is a condition where cells in the testes grow out of control, potentially forming a lump known as a tumor. Sertoli cells themselves are specialized cells, also known as sustentacular or sustentocytes, which are crucial for the process of spermatogenesis by supporting germ cells.
These tumors can be either benign or malignant, meaning they may grow slowly and remain localized, or they may be aggressive and spread to other parts of the body. While Sertoli cell tumors are a rarer form of testicular cancer, due to the risks associated with any testicular mass, a biopsy is often performed to determine the nature of the tumor.