A Case of Halo Congenital Nevus Undergoing Spontaneous Regression / 대한피부과학회지

ABSTRACT

Halo congenital nevus is a condition in which halo formation is associated with congenital nevocellular nevus. Both humoral and cell-mediated immunity have been implicated to be involved in halo formation. We described a 8-year-old boy with halo congenital nevus characterized by the unique histologic location of inflammatory cells. He has no personal and familial history of vitiligo, dysplastic nevus, melanoma or autoimmune disease. Histologically, the present case of halo congenital nevus undergoing spontaneous regression showed a marked inflammatory infiltrate with remnants of original nevus cell nests in the upper dermis, whereas no inflammatory infiltrate was present in the deep dermis. Most of inflammatory cells were T-cells.