Case 38 Female, 75 years. Ulcerating nodule, skin of lower legShow diagnosis & comments
Superficial spreading melanoma, polypoid ulcerating component
This predominantly spindle-cell melanoma has an intraepidermal component with nest formation that extends more than three rete ridges lateral to the dermal component, and is therefore sunblassified as a superficial spreading melanoma. Like any other melanoma, superficial spreading melanoma can develop a massively cellular and raised nodule, often with ulceration, just like polypoid nodular melanoma. There is a tendency to label any melanoma that produced a nodule as nodular melanoma, this is incorrect. This distinction has, however, no clinical relevance; prognosis depends on the same parameters such as thickness, presence of ulceration &c.