Ann Dermatol.  2019 Apr;31(2):213-216. 10.5021/ad.2019.31.2.213.

Congenital Dermal Melanocytosis on the Foot: A Case Report and Review of the Literature

Affiliations
  • 1Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea. jehomun@gmail.com
  • 2Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
  • 3Institute of Human-Environment Interface Biology, Seoul National University, Seoul, Korea.

Abstract

Dermal melanocytosis is a common pigmented skin disease, characterized by an increased number of ectopic melanocytes in the dermis. Rare variants of dermal melanocytosis that do not belong to these four typical groups-nevus of Ota, nevus of Ito, blue nevus, and Mongolian spots-are called dermal melanocyte hamartoma, or congenital dermal melanocytosis (CDM) as it mostly appears from birth. We report a case of CDM on the foot of a young woman with a literature review of previously reported cases of CDM.

Keyword

Congenital; Dermis; Melanocytes; Nevus; blue; Pigmentation disorders
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