For melanoma to be diagnosed a lesion must have neither of both negative features and 1 or more of the 9 positive features.
Negative features (Cannot be present)
Symmetry of pattern
Presence of a single color
Positive features (At least one must be present)
Blue-white veil
Multiple brown dots
Pseudopods
Radial streaming
Scar-like depigmentation
Peripheral black dots/globules
Multiple (5-6) colors
Multiple blue/gray dots
Broadened networ
Select one of the following: