중형의 선천성 모반세포성 모반에서 발생한 악성 흑색종 1 예

According to the size of nevus, congenital nevomelanocytic nevi (CMN) could be divided as a small, medium, and large or giant.Giant CMN is well known as precursor for malignant melanoma, but the. risk of malignant transformation in small or medium-sized CMN is the subject of controversy. We report a case of a 54-year-old man who was diagnosed as malignant melanoma arising medium -sized CMN on the trunk. Local wide excision was performed but distant metastases were found S years later. (Korean J Dermatol 2001; 39(3): 367~369)