Case 21 Female, 72 years. Black skin papule, upper armShow diagnosis & comments
Compound naevus with features of Spitz naevus especially in superficial parts; relatively small-cell type in deeper parts.
Spitz naevus is rare at this age, and the rather sharp lower border of the lesion is unusual for Spitz naevus (but not for its variant, Reed naevus). However, the features of this lesion are so regular that I believe it is safe to conclude tht it is benign. In superficial parts especially, features are thos of Spitz naevus, whereas cells are more like usual dermal naevus cells in the lower part.