Endodermal Endodermal Sinus Tumor Treatment Sinus Treatment Tumor Endodermal Sinus Tumor treatment MatthewhtyuiAlarcon Saturday, July 8, 2017 Endodermal sinus (yolk sac) tumors in toddlers and. Endodermal sinus tumors 521 desk 1. Endodermal sinus tumors age sex (yr) site afp treatm...