1994 年 9 巻 2 号 p. 165-169
A 4-month-old girl had diffuse bluish macules on her back at birth. On the macules black or reddish nodules developed gradually. Those lesions were clinically and histologically diagnosed as malignant melanoma. Excision and partial-thickness skin grafts were made. Six months after the operation, three subcutaneous nodules were seen on the sites of operation. After another operation no reccurence has been seen. We discussed this case in the context of defferential diagnosis of malignant melanoma associated with giant congenital nevus and multiple (agminated) Spitz nevus.