Teratoid intraocular medulloepithelioma.

The right eye of a 1-year-old black infant with a painful blind eye was studied histologically. It contained a tumor at an advanced stage of growth. The tumor consisted of moderately large, round, and elongated undifferentiated cells and anaplastic cells with mitotic figures combined with multilayered, poorly differentiated epithelial cells that resembled the medullary epithelium of embryonic retina. Strap cells with cross striation typical of striated muscle were also present, together with islands of hyaline cartilage and areas of calcification.