Case 16 Male, 42 years. Growing and itching papule, backShow diagnosis & comments
Nodular melanoma, deep penetrating naevus-like
The first low-power impression is of a deep penetrating naevus, though rather a compact one, but the cells are rounded and atypical, though not very pleomorphic, forming closely apposed small groups and nodules; there is a high mitotic activity. This constellation of findings was regarded as indicative of malignancy.