Part of the ABCDs for detection of melanoma. On the left side from top to bottom: melanomas showing (A) Asymmetry, (B) a border that is uneven, ragged, or notched, (C) coloring of different shades of brown, black, or tan and (D) diameter that had changed in size. The normal moles on the right side do not have abnormal characteristics (no asymmetry, even border, even color, no change in diametry).Source: National Cancer Institute via Skin Cancer Foundation
ABCDE-rule (formerly ABCD) for the macroscopic diagnostic differentiation of skin tumors (the clinical differentiation is done with the international TNM-classification!) via inspection.
A - Asymmetry
B - Borders
C - Color
D - Diameter (>5mm)
E - Evolution/Elevation
Overview
Overview with text
Overview with schematic
There is also an abcde-rule for the dermatoscopic diagnostic differentiation of skin tumors (the clinical differentiation is done with the international TNM-classification!).
(a)- asymmetry
(b) - border
(c) - coloration
(d) - differential structure
(e) - evaluation
