A Case of Bilateral Internal Mammary Arterial Infusion Chemotherapy Using Implantable Port-catheter Systems for Anterior Chest Wall Metastasis of Breast Cancer

The patient was a 53-year-old woman who presented with a metastatic tumor of the anterior chest wall after chemotherapy for right accessory breast cancer and radiation therapy for right axillary lymphadenopathy. She had already received standard treatment, but the metastatic tumor was uncontrollable and exacerbated. Palliative treatment by arterial infusion chemotherapy with an implantable catheter-port system was planned. We indwelled a port system through the arteries because the bilateral internal mammary arteries presented a dominant blood supply. The metastatic tumor almost disappeared by arterial infusion chemotherapy after 3 months. This method may be effective in selected cases of arterial infusion chemotherapy for breast cancer.