Abstract
Stage IV Gastric/Esophagogastric junction cancer (G/EGJ) has an unfavorable prognosis and poor curability. In this study, we report the case of long-term survival after multidisciplinary treatments for advanced esophagogastric junction cancer. A 53-year-old male patient was diagnosed with HER2 positive advanced esophagogastric junction cancer and mediastinal and paraaortic lymph node metastasis. After systemic chemotherapy for 1 year, minimally invasive esophagectomy was conducted as conversion surgery. However, peritoneal and liver metastasis was observed on 3 months after curative surgery. 2 years after operation, solitary brain metastasis was detected and stereotactic radiosurgery (SRS) using a gamma knife was underwent. After 1 year, despite the continuous administration of Nivolumab, the paraaortic lymph node increased in size again and radiation therapy was conducted. Currently, he is alive and undergoing chemotherapy.