[Pigmented nevus in children as a diagnostic and treatment problem].

Congenital and acquired nevi are common cutaneous malformation occurring in childhood. 315 children were cured in 1990-1995. 62% of nevi did not show any abnormalities of growth pattern and typical appearance. In 119 nevi there were danger signals present, that suggested unusual activity or possible malignant transformation. Changes of pigmentation were present in 36%, enlargement and abnormal texture in 21%, satellite nevi in 11%. Histologically, they were dermal in 28% and epidermodermal in 24%. Only in 3 children melanoma malignum was found, in 2 melanoma juvenile, in 4 dysplastic nevi. All of the children were operated. The very good final result was obtained in 289 children (92%).