It is noteworthy that thick malignant melanoma may show a uniform black, or bluegray pigmentation without presence or with only remnants of a pigment net at the edge of the lesion.
If there is no sign of a network or globular pigment pattern, other pigmented lesions must be considered (see RS Class 5).
In case of a pigment network in the lesion the next step is to analyse it further: Is it normal or abnormal. It is the main concept of RS that you first look for the classical signs of malignant melanoma:
Fig. 5 Fig. 13 |
Class 1. Probable Melanomaveil (in presence of a network) (Figs 5 and13) | |