Comparison of Sublobar and Lobectomy in Small (2 Cm or Less 0.5<CTR<1) Non-small Cell Lung Cancer: a Prospective, Multicenter Randomized Controlled Study

The early NSCLC（Non-small cell lung cancer） patients with partial solid nodules mainly composed of solid components, whose maximum tumor diameter was ≤ 2.0cm and 0.5\<CTR（Consolidation tumor ratio）\<1, as indicated by preoperative thin slice CT, were selected as the study objects. The short-term and long-term effects of segmental resection and lobectomy under Thoracoscopy were compared to provide high-level evidence for the selection of surgical treatment methods for early NSCLC.