A 50-year-old woman consulted for an enlarging lesion on her right arm;
Clinical examination revealed a red papular lesion with a slight pigmentation.
- atypical vascular pattern with polymorphous vessels, namely linear irregular vessels, dotted vessels
- a small area of pigmentation (gray dots)
An excision was performed and pathology revealed an achromic melanoma with a Breslow index at 0.5mm.