745. A CASE OF ESOPHAGEAL METASTATIC STRICTURE 9 YEARS AFTER BREAST CANCER SURGERY

Background Oesophageal metastasis of breast cancer is relatively rare. In this report, we describe our experience of a case in which dysphagia was the main complaint, leading to the diagnosis of esophageal metastasis. Method A 63-year-old woman who had undergone partial mastectomy and sentinel lymph node removal in 20xx with a diagnosis of breast cancer presented 9 years after surgery with dysphagia. The postoperative pathological diagnosis of breast cancer was invasive ductal carcinoma, T2, N0, M0, ly1. She had previously received chemotherapy for recurrent bone metastases and mediastinal lymph node metastases 7 years post-operatively, and RT and chemotherapy for a diagnosis of SVC syndrome due to mediastinal lymph nodes 8 years post-operatively. In the present case, upper gastrointestinal endoscopy showed oesophageal stricture and biopsy showed ER+ and PgR- from oesophageal mucosa. Radiotherapy and chemotherapy were administered for the diagnosis of oesophageal metastasis of breast cancer, and the patient's symptoms improved. Conclusion In the case of oesophageal stricture with dysphagia after breast cancer surgery, it is essential to consider oesophageal metastases of breast cancer as a differential, although rare, in addition to benign and primary disease.