Successful breast conserving surgery for simultaneous and ipsilateral multiple breast carcinomas of young patient-a case report

We report a case of a simultaneous and ipsilateral multiple breast carcinoma. The patient was 35-year-old woman. She was noticed a breast lump on her right breast, and visited our hospital. Mammography showed a tumor accompanied by spiculation on her right breast. Ultrasonography revealed 2 tumors with irregular margins, 23 mm in diameter and 12 mm in diameter, and were observed on C area of her right breast. The continuity of the 2 tumors was not clear. Core needle biopsies for each breast tumors led to a diagnosis. The pathological diagnosis was invasive ductal carcinoma. We checked up whole body. There was no metastatic lesion. We performed breast conserving surgery and sentinel node biopsy. The pathological diagnosis was invasive ductal carcinoma, positive for estrogen receptor and progesterone receptor, negative for HER2/neu. The Ki-67 positive cell index was 30%. The surgical margin was negative. We diagnosed T2N0M0=Stage HA. She was started the endocrine therapy by LH-RH agonist and tamoxifen. Four years after surgery, she was well without metastases.