Contrast this lesion with the harmless solar lentigo I posted earlier. Very different. The big difference is irregularity of colour and dermoscopic …Lentigo maligna on forehead

This large dark lesion on elderly, white, sun-damaged skin breaks the ABCD rule. It is Asymmetrical, has an irregular Border (Colour is 2 shades of …Irregular dark ‘mole’ on back of hand