Endodermal Sinus Tumor
Endodermal Sinus Tumor

Hyaline globules (arrows) of varying sizes are present in endodermal sinus tumors.
These globules may be mistaken for red blood cells but they vary in size and have a differing tinctorial quality than red blood cells (see left size of field).
These globules are accumulations of alpha-1-antitrypsin.
(Description By:H. Yamase, M.D. )
(Image Contrib. by: UCHC )