A 59-year-old woman displayed multiple palpable right breast masses along with ipsilateral cervical and axillary lymphadenopathy. She had a previous history of bilateral salpingo-oopho- rectomy for serous papillary adenocarcinoma two and half years ago. She underwent mastectomy for the lesions located in the upper inner breast quadrant. A 1 cm-sized primary ductal carcinoma was present; however, the other breast lesions and the metastatic axillary lymph nodes were confirmed as showing papillary serous adenocarcinoma, which were similar to the previous ovarian tumor. After the patient underwent postoperative adjuvant chemotherapy, of 8 cycles of doxorubicin and docetaxel, she has been stable during the clinical follow-up for 10 months with decreases in size of the metastatic nodules.