[Experience in the anatomopathological diagnosis of cutaneous melanomas]

The morphologic findings that allow the classification of human cutaneous malignant melanomas are presented. Their frequency, intensity and value in our series are discussed. The diagnosis of any kind of melanoma depends on multiple morphologic findings, Few of them have an absolute value. Morphologic findings with prognostic significance and the difficulties in the diagnosis of malignancy of cutaneous lesions and lymph nodes are also reviewed. The assessment of dermal invasion depends on anatomical and technical problems. Errors in tissue processing are stressed.