Medulloepithelioma, non-teratoid

Source horse, 8 year castrated male thoroughbred
Fixative formalin
Stain hematoxylin and eosin
Notes arose from ciliary body; notice the retina-like pattern to the cells (hence its frequent confusion with retinoblastoma)
See also higher magnification
higher magnification
Legend integral to image
Illustration click on image to see larger picture
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