PMC7370554_01
Sharply demarcated, friable ulcer on the upper mid-back.
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He had an endophytic ulcerating lesion with sharply demarcated rolled borders on his upper back measuring 25 cm (Figure 1).
Eroding, necrotic tumor on the left anterior chest wall.
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He also had a large lesion with sharply demarcated rolled borders and necrosis on his anterior chest wall (Figure 2).
Skin punch biopsy (HE 2x) from the left chest demonstrating variably sized lobules and infiltrating strands composed of basaloid cells with peripheral palisading and focal stromal retraction (HE 10x). Basaloid cells demonstrating variable atypia with large nuclei, prominent nucleoli, and multiple apoptotic bodies and mitotic figures including atypical forms (HE 20x).
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