Skin, right forearm punch

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

Procedure: Punch biopsy

Specimen Laterality: Right

Tumor Site: Forearm

Macroscopic Satellite Nodules: Not identified

Histologic Type: Superficial spreading melanoma

Breslow Thickness: At least 0.2 mm

Ulceration: Not identified

Microsatellites: Not identified

Mitotic Rate: None identified

Clark Level: At least II

Lymphovascular Invasion: Not identified

Neurotropism: Not identified

Tumor-Infiltrating Lymphocytes: Present, nonbrisk

Tumor Regression: Not identified

Pathologic Stage: At least pT1a. See comments.

Comments: The specimen is broadly transected at the base. Final pathologic staging should be based on the excision specimen.

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.