Testicular cancer is a potentially fatal health condition that affects the testicles or testes. It is also referred to as testis cancer, testicular neoplasm, or germ cell testicular cancer. Some other synonyms that are commonly used to describe testicular cancer include testicular tumor, seminoma, non-seminoma, embryonal carcinoma, yolk sac carcinoma, and choriocarcinoma. Regardless of the synonym used, early detection and treatment of testicular cancer are critical for a successful outcome. Therefore, it is crucial for men to perform regular testicular self-examinations and seek medical attention immediately if any abnormal signs or symptoms are detected.