[A Case of Recurrence-Free Survival for One Year after Surgery, Radiotherapy, and Chemotherapy for Stage Ⅳ Lung Cancer].

The prognosis for stage Ⅳ lung cancer is generally poor. However, there have been reports that local treatment of metastatic disease(that is oligometastatic disease), may improve prognosis. The standard treatment for stage Ⅳ non-small cell lung cancer with distant metastases is chemotherapy, and the efficacy of local therapy for primary tumors and metastases is controversial. In recent years, the efficacy of concomitant use of immune checkpoint inhibitor has also been reported, and it is possible that some evidence-based guidelines will be provided in the future. In this report, we describe a case of stage Ⅳ lung cancer with intra-abdominal lymph node metastasis that was treated with thoracoscopic and laparoscopic surgery, local radiation therapy, and chemotherapy. There have been no sign of recurrence for 1 year.