[Dysplastic nevus]

The paper presents a literature review of the last 10 years and original data. Dysplastic nevus is a category of pigmented skin lesions determined clinically and histologically. It presents a marker of melanoma and other tumours risk. To diagnose dysplastic nevi morphologically, two main (central complex nevus of ordinary type, melanocytic dysplasia in the nevus "shoulders") and 4 additional criteria should be recognized. The combination of the main and at least two additional criteria allows the diagnosis of dysplastic nevus.