Melanocytic neoplasia in the cat

Clinical features and histopathological details from 13 cases of melanocytic neoplasia in the cat are presented. The series includes cases of intraocular melanoma (n = 5), limbal melanoma (n = 2), dermal melanoma (n = 5) and one case of metastatic melanoma for which a primary site was not identified. In the case of the intraocular tumours, there was apparent correlation between the degree of cellular pleomorphism, the mitotic rate and the extent of local infiltration. Such an association was not identified for the melanomas arising from the limbus or skin.