Back issues No.2 - 1998 / Case Report  

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Congenital Dermal Melanocytosis—A Case Combined with Multiple Blue Nevus-Like Lesions
Tsung-Hsieh Shih, Yu-Fu Chen, Chin-Ming Hung, Tsen-Fang Tsai
Dermatol Sinica 16: 113-118, 1998

Dermal melanocytosis is characterzied by ectopic melanocytes present in the dermis. We report a case of congenital dermal melanocytosis combined with multiple blue nevus-like lesions and vitiligo-like lesions. Such case with complex pigment disorders has not been reported in English literature.A 53-year-old female presented with a brown patch with several darker macules within it on the right wrist since birth, size measured to 10 x 8 cm at present. In addition, many bluish black papules developed on her extremities and face since childhood. Both biopsy specimens taken from the speckled patchy lesion on the right wrist and papular lesion on the right forearm showed diffuse distribution of melanocytes in the upper dermis , but the melanocytes were distributed in a much more condensed manner and tumor-like pattern in the papular lesion on the right forearm.

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