Neuroid congenital melanocytic nevus with hematoma.

Abstract

Congenital melanocytic nevus (CMN) accounts in Bari for 1,4% of infants (1). Unlike CMN of the glabrous skin where terminal hairs usually appear from the third year of life, CMN of the scalp may appear at birth only with an area of thick hairs, which hides the underlying hyperpigmented skin. By the time NMC often becomes invisible with disappearance of the cosmetic defect, but creating more difficulties for its clinical monitoring. In about 7% of the cases, NMC may regress from a clinical point of view (2). These events must be taken into account in choosing between clinical monitoring and surgical removal. The NMC here described is characterized by the dotted bluish pigmentation and by messy angiogenesis, which has probably favored the formation of the hematoma.