Case 45 Male, 30 years. Papule of skin of backShow diagnosis & comments
Spitz naevus,with rather deep dermal penetration
Desmoplastic melanoma is not a consideration here (compare with cases of desmoplastic melanoma in the slide set of melanoma subtypes): cells and their nuclei are plump rather than long and slender; there is some clustering in upper parts whereas in deeper parts cells are more dispersed; no mitotic activity was identified; the lesion is small and occurs in non-sundamaged skin. The deep dermal prnetration and the presence of some perivascular round-cell infiltrates is, in view of the other findings mendtioned, of no concern.