Abstract: Objective To investigate the relationship between lymph node metastasis and r and clinical pathology in patients with left lung cancer resection combined with regional lymph node dissections.
Methods A retrospective analysis of 90 patients with left lung cancer resection combined with regional lymph node dissection in our hospital from February 2017 to February 2019 Patients was performed.Pathological analysis of the patient's clinical data and analysis of the correlation between lymph node metastasis and risk factors.
Results The number of metastases in upper lobe of left lung was higher than that in lower lobe of left lung(P<0.05).The number of small cell carcinoma metastases was significantly higher than that of adenocarcinoma and squamous cell carcinoma,and squamous cell carcinoma was significantly higher than adenocarcinoma(P<0.05).T3 was significantly higher than T1,T2,T4,while T2 was significantly higher than T1,T4,and T4 significantly higher than T1(P<0.05).The number of poorly differentiated metastases was significantly higher than that of the high differentiated and moderately differentiated,and moderately differentiated was significantly higher than high differentiated(P<0.05).The total left upper lung metastasis rate was 29.76%,of which groups 3 and 10 were the most;the total left inferior lung metastasis rate was 20.92%,of whichgroup 6 the most.
Conclusions The upper left lung is easily metastasized to lymph nodes in groups 3 and 10,the left middle lung is easily metastasized to lymph nodes in group 3,and the inferior left lung is easily metastasized to lymph nodes in 6 groups.At the same time,the risk factors for metastasis are related to tumor size,pathological classification,tumor location,and degree of pathological differentiation,and not to patient age,smoking,and gender.

Key words: left lung cancer resection, regional lymph node dissection, lymph node metastasis, risk factors