Definition: Schiller-Duvall body is a morphological pattern seen in endodermal sinus tumor (yolk sac tumor). It consists in a central vessel surrounded by tumor cells in a cystic space often lined by flattened tumor cells.
Schiller-Duvall body is a structure seen in the endodermal sinus pattern of yolk sac tumor. The whole structure being contains in a cystic space often lined by flattened tumor cells.