Figure 2. Metastatic adenocarcinoma of the right breast presenting as an enlarging red nodule that mimic hidradenitis suppurativa in a 30-year-old woman.

A persistent enlarging red nodule (black arrow) on the right breast that did not respond to oral and topical therapy for hidradenitis suppurativa. A punch biopsy (taken from the area within the purple circle) demonstrated an adenocarcinoma of the breast that had metastasized to the skin.