Keywords: Melanoma4.jpg Superficial spreading melanoma arising from a dysplastic nevus The 4-by-8-mm pink-tan lesion with irregular borders at the upper left arrow is a dysplastic nevus Arising from it is an invasive malignant melanoma with its characteristic blue-black color notched border and distorted surface The gray area at the lower left represents tumor regression <br> Topics/Categories Pathology -- Patient<br> Type Color Slide <br> Source National Cancer Institute<br> Author Unknown photographer/artist <br> AV Number AV-8500-3699 <br> Date Created 1985 <br> Date Entered 1/1/2001 <br> Access Public http //visualsonline cancer gov/details cfm imageid 2181 PD PD-USGov Superficial spreading melanoma |