关键词: 副乳腺切除术, 腋窝淋巴结清扫术, 预后, 副乳腺癌

Abstract: Objective:To analyze the clinical pathological features of one patient with accessory breast cancer(ABC),and to explore the diagnosis,treatment, operation methods and prognosis of ABC patient. Methods: The patient received right axillary tumor resection,right axillary accessory breast resection and axillary lymph node dissection, didn't receive resection of breast in the affected side. According to the intraoperative frozen pathological diagnosis, the clinical diagnosis was ABC. After operation, the patient was treated with 8 cycles of AC-T regimen adjuvant chemotherapy(The first four cycles were given pirarubicin 60 mg·m^-2, cyclophosphamide 600 mg·m^-2 per cycle; the last four cycles were given docetaxel 100 mg·m^-2 per cycle; every three weeks was a cycle of treatment), radiation therapy(The radiation dose was 50 Gy/25 f in the upper and lower part of the right collarbone and the tumor bed area, and after retract the tumor bed area was increased to 60 Gy)and endocrine therapy(Tamoxifen was administered at 20 mg per day). Results: The patient's breast color ultrasound and mammogram examination indicated that the right axillary mass of the patient was more likely to be malignant. The clinical diagnosis was right axillary ABC. According to the NCCN guide, the patient was treated with the standardized comprehensive treatment based on surgical treatment. 16 months after operation, the patient recovered well and had a normal life. There was no upper limb dysfunction and no lateral upper limb lymphedema, and there were no recurrence or metastasis. Conclusion: ABC is extremely rarely seen in clinical practice. The clinical pathological features and treatment of ABC are similar to breast cancer. If there is no lesion in the mammary gland, it is not necessary to remove the mammary gland in the affected side.

Key words: axillary lymph node dissection, prognosis, accessory breast cancer, accessory breast resection