Stereotactic ablation radiotherapy (SABR) was performed sequentially on the primary and secondary lesions. 50Gy/4F or 70Gy/10F were used according to the specific location of the tumor. Immunotherapy was started 2 weeks after the end of radiotherapy. Sintilimab : 200 mg intravenously, Q3W every cycle , given on the D1 of each cycle, and total of 4 cycles.
The purpose of this study is to assess of the Safety and Effects of Stereotactic Ablation Radiotherapy (SABR) combined with Sintilimab in early inoperable synchronous Multiple Primary Lung Cancer (sMPLC)