• Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, P.R.China;
LIU Lunxu, Email: lunxu_liu@aliyun.com
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Objective  To identify the risk factors for postoperative recurrence of peripheral solid small-nodule lung cancer (PSSNLC) (T≤2 cm), and to explore the effects of surgery types on prognosis. Methods  We extracted data from Western China Lung Cancer Database (WCLCD), a prospectively maintained database at the Department of Thoracic Surgery, West China Hospital, Sichuan University, and Surveillance, Epidemiology, and End Results (SEER) database for peripheral solid small-nodule lung cancer patients (T≤2 cm N0M0, stageⅠ) who underwent surgerybetween 2005 and 2016. We used univariable and multivariable logistic regression to analyze risk factors for recurrence of PSSNLC. We applied propensity-score matching to compare the long-term results of segmentectomy and lobectomy, as well as the survival of patients from WCLCD and SEER. We finally included 4 800 patients with PSSNLC (T≤2 cm N0M0) (WCLCD∶SEER=354∶4 446). We matched 103 segmentectomies and 350 lobectomies in T≤1 cm, and 280 segmentectomies and1 067 lobectomies in 1 cm<T≤2 cm at a ratio of 1∶4 according to the propensity scores. Results  The results of multivariable logistic regression showed that older age (HR=1.04, 95%CI 1.03-1.05, P<0.001), male (HR=1.60, 95%CI 1.37-1.88, P<0.001), squamous carcinoma (HR=1.65, 95%CI 1.40-1.95, P<0.001), lymph node removed (HR=0.97, 95%CI 0.96-0.99, P<0.001) were risk factors for recurrence after surgery. We found that segmentectomy and lobectomy could reach similar survival in PSSNLC patient with either T≤1 cm or 1 cm<T≤2 cm. Analyses of 1 441 patients with PSSNLC after matching (WCLCD∶SEER=325∶1 116) indicated that the 5-year overall survival rate of the patients in WCLCD was better than that in SEER database ( 89.8% vs. 77.1%, P<0.001). Conclusion  Older age, male, squamous carcinoma, and lymph node removed are the risk factors for recurrence of PSSNLC. Segmentectomy shows similar survival in PSSNLC patient with either T≤1 cm or 1 cm<T≤2 cm N0M0. The patients in the WCLCD shows better survival compared with of the patients in the SEER database.

Citation: ZHOU Jian, XIAO Congjia, PU Qiang, MEI Jiandong, MA Lin, LIN Feng, LIU Chengwu, GUO Chenglin, LIAO Hu, ZHU Yunke, ZHENG Quan, CHEN Lei, CHE Guowei, WANG Yun, LIN Yidan, KOU Yingli, YUAN Yong, HU Yang, WU Zhu, LIU Lunxu. The risk factors for recurrence of peripheral solid small-nodule lung cancer (diameter≤2 cm) and the impact of different surgery types on survival: A propensity-score matching study. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2021, 28(11): 1283-1291. doi: 10.7507/1007-4848.20211041 Copy

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