The Score of Menzies et al for Pigmented Skin Lesions

Parameter:

(1) symmetry (symmetry of colors or structures along any axis drawn through the center of the lesion)

(2) number of colors

(3) 9 characteristics

Benign lesions show both:

(1) symmetry

(2) 1 color

Malignant melanomas show all of the following:

(1) asymmetry

(2) more than 1 color

(3) >=1 of 9 key characteristics

9 characteristics:

(1) blue-white veil (irregular, confluent, structureless, blue pigmentation with an overlying hazy appearance)

(2) multiple brown dots

(3) multiple blue-gray dots

(4) multiple peripheral black dots and/or globules

(5) pseudopods

(6) radial streaming (radially oriented extensions of the pigment network at the periphery of a lesion)

(7) multiple colors (>= 5)

(8) a broadened pigment network (localized pigment network in which the line segments are thickened and irregular)

(9) scarlike depigmentation