A Case of Halo Congenital Nevus.
- Author:
Yun Seok YANG
1
;
Min Kyung SHIN
;
Mu Hyoung LEE
Author Information
1. Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea. mhlee@khmc.or.kr
- Publication Type:Case Report
- Keywords:
Halo congenital nevus
- MeSH:
Arm;
Child;
Dermis;
Humans;
Melanins;
Melanocytes;
Nevus;
Nevus, Pigmented;
T-Lymphocytes
- From:Korean Journal of Dermatology
2008;46(11):1564-1566
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The term halo congenital nevus is a condition in which halo formation is associated with congenital melanocytic nevus. The regression of congenital melanocytic nevi is usually accompanied by the halo phenomenon and this is considered to be a rare event, although this may be underestimated. We describe here a 9-year-old boy with verrucous congenital nevus surrounded by a depigmented halo on the right upper arm. Histologically, the nevus lesion revealed a dense lymphocytic infiltration in the upper dermis intermingled with some remnants of nevus cell nests. Most of the infiltrating cells were CD8+ T lymphocytes. At the edge of the lesion, corresponding to the area of the halo, neither melanocytes nor melanin were found in any significant amounts.