ABSTRACT
Surgery is the first choice for the treatment of early non-small cell lung cancer(NSCLC),and lymph node metastasis is the most important factor influencing prognosis of resectable NSCLC.A large number of studies have identified the importance of systematic mediastinal lymph node(N2) dissection,which is also an important basis for the development of NCCN guidelines.But there are few reports about the dissection of intrapulmonary lymph node(N1),especially no detailed study on the dissection of the lymph nodes around the bronchi of non-primary tumor-bearing lobes and segments in lung cancer,and the NCCN guidelines were not detailed elaborate.This article will make a summary of the research on the correlation of intrapulmonary lymph node(N1) dissection.