Congenital intraocular melanoma in a calf.

A congenital benign intraocular melanoma was the cause of extreme buphthalmos in the enucleated right eye of a 7-day-old Charolais-cross calf. The tumour was well differentiated with rare mitotic figures and no evidence of extrascleral nor vascular invasion. Congenital intraocular tumours occur rarely in animals and man. There was no evidence of malignancy when the calf was slaughtered 9 months after the enucleation.