Primary cutaneous apocrine carcinoma (PCAC), a subtype of sweat gland carcinoma, is an extremely rare malignant tumor that originates from either normal or modified apocrine glands and affects both genders equally, with no racial predilection. Most of these tumours arise in regions of high apocrine gland density, especially in the axilla and, to a lesser extent, in the anogenital region, and rarely in the scalp, face, chest, and distal upper extremities. This neoplasm is often difficult to diagnose from metastatic breast carcinoma. This requires clinic-radiological and histological correlation for final diagnosis.