Congenital Melanocytic Nevus with Distinctive Nevus Cell Proliferation within Multiple Epidermal Cyst-Like Changes.

Vol. 28, No. 1, 2016 123 Received January 17, 2015, Accepted for publication March 21, 2015 Corresponding author: Hoon Kang, Department of Dermatology, St. Paul’s Hospital, College of Medicine, The Catholic University of Korea, 180 Wangsan-ro, Dongdaemun-gu, Seoul 02559, Korea. Tel: 82-2958-2143, Fax: 82-2-969-8999, E-mail: [email protected] This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Fig. 1. (A) Solitary dark-colored plaque on the patient’s right cheek with foul-smelling discharge on squeezing. (B) Histopathological findings in the excised specimen showed congenital melanocytic nevus with multiple cysts filled with keratinous material (H&E, ×10), and melanocytic nevus cells were imbedded along the epithelium of a huge epidermal cyst resembling buddings on the tree (inset, ×100). http://dx.doi.org/10.5021/ad.2016.28.1.123