Spitz naevus

This lesion is benign but is very dark in colour, although not black enough to constitute a real worry. Excision is often performed because of doubt as to its nature. A Spitz naevus is a histological diagnosis. It is a compound naevus with a somewhat pleomorphic appearance, but has striking symmetry and the cells are epithelioid or spindly with an abundant eosinophilic cytoplasm.