The objective is to screen and monitor the efficacy of cfDNA methylation in patients with stage I lung cancer after ablation, to compare the similarities and differences of cfDNA methylation between surgical treatment and ablation in patients with stage I lung cancer, and to look for new indicators to assess the efficacy of ablation therapy and to monitor lung cancer recurrence.~The main research content is to screen the cfDNA methylation index that can monitor the efficacy of stage I lung cancer ablation and compare the similarities and differences of cfDNA methylation in patients with stage I lung cancer after surgery and ablation.
The objective is to screen and monitor the efficacy of cfDNA methylation in patients with stage I lung cancer after ablation, to compare the similarities and differences of cfDNA methylation between surgical treatment and ablation in patients with stage I lung cancer, and to look for new indicators to assess the efficacy of ablation therapy and to monitor lung cancer recurrence.