Korean J Dermatol.
2004 Feb;42(2):184-188.
A Case of Malignant Melanoma Arising in Small Congenital Melanocytic Nevus
- Affiliations
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- 1Department of Dermatology, Seoul National University College of Medicine, Korea. khcho@snu.ac.kr
- 2Department of Plastic Surgery, Seoul National University College of Medicine, Korea.
- 3Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea.
Abstract
- Malignant melanoma may arise de novo as well as in association with preexisting melanocytic nevi such as congenital and acquired melanocytic nevi. Although an increased risk for malignant melanoma arising in giant congenital melanocytic nevi seems to be well established, the risks associated with small or medium-sized congenital melanocytic nevi are matters of controversy. We report a case of malignant melanoma arising in a small congenital melanocytic nevus occurring in a 67-year-old man. He visited our hospital with a history of a pigmented lesion that had been present on his back since birth. Physical examination revealed a 0.9x0.8cm sized, brownish to black papule on his back. Histopathologic examination showed mature nevoid cell nests in the dermis associated with overlying atypical melanocytic lesion.
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