Skin, right forearmpunch

Invasive superficial spreading melanoma, Breslow thickness 0.2 mm, Clark level II, non-mitotic, no ulceration.

Sections reveal an invasive melanoma with a predominantly superficial spreading pattern. The tumor is composed of atypical melanocytes with pagetoid spread and nests in the dermis. Maximum Breslow thickness is at least 0.2 mm, and Clark level is at least II. No mitotic figures are noted. No ulceration is noted. The lesion is present at the deep margin.

Received in formalin is a tan-pink skin ellipse labeled 'A. Skin, right forearm punch (JS)' measuring 3.0 x 1.5 cm. The specimen is inked at the margins and submitted in its entirety. Gained 1.0 x 0.5 cm at the deep margin.

8 x 6 mm pigmented lesion right forearm. BCC vs AK.