Neoadjuvant chemotherapy for primary invasive ductal carcinoma of the nipple: A case report.

Breast cancer typically arises from the terminal duct-lobular unit of the mammary gland and rarely from the ducts inside the nipple. The present paper reports a rare case of primary invasive ductal carcinoma of the papilla, which was a locally advanced triple-negative breast cancer that was treated with 6 cycles of neoadjuvant chemotherapy with a nab-paclitaxel, epirubicin and cyclophosphamide regimen. Surgical pathology confirmed that a pathological complete response was achieved and adjuvant radiotherapy was performed postoperatively. No recurrence or metastasis occurred as of April 2024. A review of previous similar cases revealed that primary invasive breast cancer of the nipple has several manifestations. Changes in the nipple should be treated cautiously and a pathological biopsy should be performed in a timely manner. Breast cancer occurring in the nipple can be treated with reference to the same type of common breast cancer, and neoadjuvant chemotherapy can also be performed first if neoadjuvant chemotherapy is indicated.