[A Case of T4 Esophageal Cancer with Refractory Chylothorax Developed Postoperatively].

A 65-year-old man was diagnosed as having middle thoracic esophageal cancer(c-T3N2M0, stage III ), and neoadjuvant chemoradiotherapy was performed.We performed surgical therapy.However, tumor and #113 lymph node invasion into the aortic arch was observed; therefore, it was judged that curative resection was difficult, and R2 surgery was performed instead. Postoperative diagnosis was Mt, CRT-type 5b, s-T4(aortic arch)N4(#113)M0, stage IV a.After surgery, pleural effusion was abundant and was diagnosed as chylothorax.Even though intestinal rest and octreotide administration were performed as a conservative treatment, chylothorax was not improved.Therefore, thoracoscopic thoracic duct ligation was performed on 8POD.After that, pleural effusion was still sustained, and pleural adhesions were performed.However, it did not prove to be effective.Furthermore, when Lipiodol lymphangiography was performed to identify the leakage site, the leakage of contrast medium was observed from the remaining lymph node.After lymphangiography twice(in total), pleural effusion disappeared, and the patient was discharged on the 75POD.In this case, we report an example in which lymph leakage disappeared due to lymphangiography for diagnostic purpose, while no improvement was observed in the lymphatic leakage from the remaining metastatic lymph node in T4 esophageal cancer with R2 surgery, nor with some treatments for chylothorax, including thoracic duct ligation.