Postmastectomy Cutaneous Rash: A Diagnostic Dilemma

Cutaneous metastases resulting from breast carcinoma display a wide range of appearances, which can masquerade as infections, vascular lesions, reactive erythemas, benign tumors, or other conditions, thus posing diagnostic challenges. Among the classical patterns associated with breast carcinoma are carcinoma erysipeloides (CE), carcinoma en cuirasse, and carcinoma telengiectoides. Here, we present a detailed case report of metastatic breast carcinoma in a 38-year-old woman previously treated with modified radical mastectomy, chemotherapy, and radiotherapy for left breast carcinoma. This case showcases a unique combination of carcinoma en cuirasse, indicative of recurrence, and the less common variant, CE, which manifested later in the course of inadequately treated disease. Early and accurate identification of these lesions is imperative for timely intervention.