label: Testicular Yolk Sac Tumor, Postpubertal-Type
label_lc: testicular yolk sac tumor, postpubertal-type
description: Testicular yolk sac tumor that is associated with germ cell neoplasia in situ and usually occurs as a component of mixed germ cell tumor. Pure postpubertal-type testicular yolk sac tumor is exceedingly rare.