An Unusual Case of Scalp Metastasis from Breast Cancer

The most common sites of breast cancer metastases are the bone, lung, liver, and brain. Scalp involvement in breast cancer metastasis is extraordinarily rare. This study reports a 52-year-old woman who had a history of malignant right breast cancer and underwent a mastectomy. Positron emission tomography/computed tomography revealed a soft tissue nodule measuring 1 × 0.7 cm located subcutaneously on the top left side of the scalp. A scalp mass...