[A Case of Advanced Esophageal Cancer Successfully Treated with Multidisciplinary Therapy]

We report a case of advanced esophageal cancer that was successfully treated using chemotherapy, operation, and chemoradiotherapy. A 66-year-old man with advanced esophageal cancer(Mt, O-Is, T4[N0.7-stomach], N2, M0, Stage III)was administered chemotherapy(docetaxel[DOC], cisplatin[CDDP], and 5-fluorouracil[5-FU]: DCF). As the esophageal tumor achieved complete clinical response after 2 courses of chemotherapy, lymph node dissection and proximal gastrectomy were performed for the residual tumor. Abdominal CT 3 months after surgery revealed lymph node swelling. He was diagnosed with lymph node metastasis and was administered chemoradiotherapy. After chemoradiotherapy, liver metastasis was revealed, and he underwent immune checkpoint inhibitor immunotherapy. Despite the administration of immune checkpoint inhibitors, the liver metastasis developed, so he was treated with S-1 chemotherapy. S-1 chemotherapy resulted in a favorable response, and almost all metastatic lesions decreased. The patient is alive 12 months after S-1 chemotherapy without any signs of tumor regrowth.