label: Testicular Spermatocytic Tumor with Sarcoma
label_lc: testicular spermatocytic tumor with sarcoma
description: A malignant germ cell tumor that arises from the testis and is characterized by the presence of a spermatocytic tumor component that is contiguous with an undifferentiated or differentiated sarcomatous component.  It usually presents as a slowly growing mass that enlarges very rapidly soon after the initial diagnosis.