[The association of primary acquired conjunctival melanosis, malignant melanoma and Parinaud's dermoepithelioma].

The association of a primary acquired conjunctival melanosis, a malignant conjunctival melanosis, and a nevus cysticus, has never been reported in the literature, as far as we know. If the coexistence of a malignant melanosis and a primary acquired melanosis may be explained easily, it is still difficult to construe the presence of a nevus cysticus, since it is usually a mild tumor, that does not degenerate.