Abstract: A 50-year-old female has erythematos-infiltrativer plaques on the chest and back with occasional pain for 15 months. She was diagnosed as invasive breast carcinoma stage ⅢB (cT4N1M0) and axillary lymph node metastases 27 months ago. The patient was treated with chemotherapy and mastectomy for right breast carcinoma. The redness and swelling lesions with pruritus on the chest and check with itching at 8-month after surgery, and the size gradually increased. Pathological biopsy and immunohistochemical staining of left breast skin showed that cancer cells were consistent with the origin of breast carcinoma. The diagnosis of cutaneous metastatic carcinoma from breast carcinoma was made.

Key words: breast carcinoma, cutaneous metastasis