[A case of aggressive primary squamous cell carcinoma of the breast refractory to preoperative neoadjuvant...

A 42-year-old woman came to our hospital complaining of an enlarging tumor in her right breast. A core needle biopsy of the involved area demonstrated primary squamous cell carcinoma (SCC) of the breast. Preoperative neoadjuvant chemotherapies included 5-fluorouracil: 5-FU+epirubicin: EPI+cyclophosphamide: CPA (FEC), paclitaxel (PTX), vinorelbine (VNR) and 5-FU+nedaplatin (254-S) given in the order listed, but the mass continued to enlarge. Therefore, surgical resection was performed. Local recurrence and lung metastasis occurred after surgery. Although postoperative adjuvant chemotherapy consisting of carboplatin (CBDCA) +etoposide (VP-16) was administered, the patient died three months after surgery. SCC of the breast is generally treated according to clinical stage using protocol for common types of breast cancer. However, effective regimens have not been established for SCC, because it tends to be treatment-refractory. Therefore, in patients with SCC, it is important to consider surgery at an earlier stage than would be considered for a common breast cancer requiring preoperative neoadjuvant chemotherapy.