Ploidometric diagnosis of melanocytic skin neoplasms

Differential diagnostic criteria of the tumors of the melanocytic genesis are established (73 cases). Average ploidy of typical cells of a simple nevus is 2.9 +/- 0.9 c. This increased up to 4.2 +/- 1.8 c. in cells of the dysplastic nevi regardless of the dysplasia degree. Malignant melanomas had mean index of the nuclear ploidy equal to 5.94 +/- 0.23 c.