label: Testicular Yolk Sac Tumor, Endodermal Sinus/Perivascular Pattern
label_lc: testicular yolk sac tumor, endodermal sinus/perivascular pattern
description: A yolk sac tumor that arises from the testis and is characterized by the presence of connective tissue stalks that contain a blood vessel and are lined by cells with clear cytoplasm and prominent nucleoli.