Abstract

The blue nevus is an abnormal collection of functioning dermal melanocytes and melanin. Clinical-grey-blue sometimes black colored patch or papula. Commonly it is localized on the head, back, hands and legs with size to 1 cm. Predominantly it is a benign process. The development of malignant melanoma from blue nevus is seldom. The malignant blue nevus is most frequently localized on the scalp. I am reporting a case of a 75-year-old woman with malignant melanoma on the right arm, which developed from a blue nevus.