Clinical study of the congenital melanocytic naevi in the child and adolescent.

Abstract:

BACKGROUND:The classification of the congenital melanocytic nevus (CMN) and the magnitude of the risk of transformation into melanoma are still controversial. OBJECTIVE:To analyse the profile of the CMN in the child and teenager at IPPMG-UFRJ according to sex, skin colour, age, clinical type, locations and evolution. METHODS:Longitudinal study of retrospective and prospective cohort from 1994 to 2007. Aleatoric sample from spontaneous or referal demand. RESULTS:30 children and 30 teenagers showed 74 nevi: 60,8% (small), 27% (medium), 5,4% (large) and 6,7% (giant); from these, 45,9% were in the male sex and 54% in the female sex. There were 45,9% in white and 54% in non-white. Sex and skin colour didn't influence the clinical type. Among the small and medium nevi, 27,1% were located in the trunk, 23% in the head and neck; the large and giant ones in the head,neck, back and limbs; 28,3% were attended for more than 10 years, 47,3% between three and nine years and 24,4% for a time below three years; the small and medium CMN kept unchanged. The fading of the lesion was observed in one large and in two giant CMN. No cases of melanoma were observed. CONCLUSION:An homogeneous distribution among white/non white and male/female; the sex and the ethnic group did not influence the clinical type; the small CMN was the most frequent clinical type mainly in the trunk.

journal_name

An Bras Dermatol

authors

Fernandes NC,Machado JL

doi

10.1590/s0365-05962009000200005

subject

Has Abstract

pub_date

2009-03-01 00:00:00

pages

129-35

issue

2

eissn

0365-0596

issn

1806-4841

pii

S0365-05962009000200005

journal_volume

84

pub_type

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