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KMID : 0363220080460111564
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Korean Journal of Dermatology
2008 Volume.46 No. 11 p.1564 ~ p.1566
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A Case of Halo Congenital Nevus
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Yang Yun-Seok
Shin Min-Kyung
Lee Mu-Hyoung
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Abstract
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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.
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KEYWORD
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Halo congenital nevus
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