Medulloepithelioma in a cat.

Castrated male of European cat, bastard, 16 month-old suffered from a grayish-pink tumour in the anterior chamber of the right eyeball in the course of last six months. After enucleation, the eye was examined by histology, immunohistochemistry (NSE, NPF, S-100 protein) and electronmicroscopy. The tumour was classified as malignant medulloepithelioma. Existence of neuroblastoma in animals and frequency of neuroblastoma and medulloepithelioma in humans and animals is discussed.