severe dysplastic nevus melanomadysplastic nevus removal surgeryjunctional nevus with severe atypialentiginous dysplastic nevusdysplastic nevus pathologysevere dysplastic nevusexcision of dysplastic nevusclarks dysplastic nevusdysplastic nevus molefamilial dysplastic nevus syndromeseverely dysplastic compound nevusdysplastic nevus with severe atypia