Testicular cancer: what is a non seminomous germ cell tumor?

Potentially serious. A nonseminomatous germ cell tumor is a malignancy that has multiple origins within the testicle. It is less common, but potentially more serious, than seminomas of the testicle. Early and aggressive treatment is necessay and can lead to cure in many patients that present with limited disease. Systemic chemotherapy is now available for patients that present with advanced tumors.