Description: Non-polarising Dermlite Fluid. Pattern is clods brown and black, with some peripheral lines reticular. Clue to melanoma, structureless white.

History: History is of a macule arising on the upper arm 3 years previously, which shrank and was replaced by the nodule now apparent. There is a small part of the previous macule still visible. The histology was reported as; Sections show an early level 4 (1.5mm thick) superficial spreading melanoma. There is no ulceration. The mitotic count is low. There is a mild lymphocytic infiltrate in the base. There is no significant regression in the lesion. The other lesion is an almost completely regressed solar lentigo.