A case of BRCA1 positive bilateral metachronous breast cancer in which recurrence was difficult to diagnose (JBCS 2024)
In June of X year, right breast cancer cT2N3bM0 stage â…¢C Luminal B was diagnosed and neoadjuvant chemotherapy (FEC therapy, Docetaxel therapy) was performed. In December, she underwent right mastectomy and axillary dissection, and the postoperative pathology results showed a diagnosis of ypT1aN0M0 stage I. After surgery, she was administered radiation therapy (50Gy) and tamoxifen and goserelin as postoperative adjuvant endocrine therapy...In May of X+7, the internal thoracic and mediastinal lymph nodes showed a tendency for slight enlargement, so Tamoxifen was changed to Letrozole...In September, tracheal compression and recurrent laryngeal nerve paralysis due to mediastinal lymph nodes were observed, and radiation therapy (45Gy/20Fr) was performed, after which Pembrolizumab + Carboplatin + Gemcitabine administration is ongoing...A year later, metastasis was diagnosed from a slowly growing mediastinal lymph node. We report this case, including a literature review, in which it was difficult to diagnose recurrence