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Sleeve lobectomy after neoadjuvant chemoimmunotherapy/chemotherapy for local advanced non-small cell lung cancer
Hengrui Liang1, Chao Yang1, Diego Gonzalez-Rivas2
1Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou, China.
Background:
Sleeve lobectomy has been reported to be a safe procedure after neoadjuvant chemotherapy. We aim to evaluate the oncological and surgical outcomes of neoadjuvant chemoimmunotherapy (IO+C) for local advanced non-small cell lung cancer (NSCLC) patients who underwent sleeve lobectomy.
Methods:
NSCLC patients that underwent sleeve lobectomy between December 2016 and December 2019 were retrospectively included. Patients were divided into two groups: neoadjuvant IO+C and chemotherapy. Oncological, intraoperative and postoperative variables were compared.
Results:
In total, 20 patients underwent sleeve lobectomy after neoadjuvant IO+C (n=10) or chemotherapy (n=10). In the neoadjuvant IO+C group, 8/10 (80%) patients achieved a partial response (PR), 1/10 (10%) patients had a complete pathological response (CPR), and 5/10 (50%) patients achieved a major pathological response (MPR). In the neoadjuvant chemotherapy group, only 3/10 (30%) patients had PR, and 3/10 (30%) patients achieved MPR. No complications were found in the neoadjuvant IO+C group, 1 chylothorax occurred in the neoadjuvant chemotherapy group. Other peri- and postoperative outcomes were similar: bleeding volume (365.00 vs. 347.50 mL; P=0.267), operation time (291.88 vs. 287.50 min; P=0.886), chest tube duration (5.40 vs. 5.00 day; P=0.829), total drainage volume (815.50 vs. 842.50 mL; P=0.931) and the length of hospital-stay (7.00 vs. 6.56 day; P=0.915). In addition, less N1 (average number 4.70 vs. 7.40) and N2 (average number 9.80 vs. 20.10) lymph nodes were acquired in the neoadjuvant IO+C group than the neoadjuvant chemotherapy group. The number of lymph nodes positive for tumor cells was also less in the neoadjuvant IO+C group than the neoadjuvant chemotherapy group, both in N1 (0.40 vs. 1.60) and N2 (0.10 vs. 1.30). The positive lymph node ratio (LNR) was lower in the neoadjuvant IO+C group, both in N1 (0.05 vs. 0.15) and N2 (0.01 vs. 0.09). A greater destruction on elastic fiber of the blood vessels, vascular wall degeneration, fibrinoid necrosis and fibrosis, and greater pulmonary interstitial exudation were found in neoadjuvant IO+C patients compared to the neoadjuvant chemotherapy patients.
Conclusions:
Sleeve lobectomy for advanced NSCLC following IO+C is feasible, although the operations become more complex, neoadjuvant IO+C did not delay postoperative recovery.
