[A Case of Ipsilateral Breast Cancer with Contralateral Axillary Node Recurrence after Right Breast Partial Mastectomy].

A female patient who was in her 50s visited our hospital complaining right breast tumor, 18 years after her right breast- conserving partial mastectomy with right axillary lymph nodes dissection. Ultrasonography revealed a right breast tumor and an enlarged lymph node at left axilla. Core needle biopsy(CNB)from the right breast tumor showed the recurrence of her breast cancer and fine-needle aspiration(FNA)from her left axillary lymph node showed Class Ⅴ. We concluded the recurrence of right breast cancer with left axillary metastasis. After neoadjuvant chemotherapy, she underwent right mastectomy and left axillary lymph node dissection. When the recurrence of residual breast is seen, the contralateral axillary lymph node might become a new sentinel lymph node.