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A Multicenter Retrospective Cohort Study on Superior Vena Cava Resection in Non-Small-Cell Lung Cancer Surgery
Andrea Dell'Amore1, Alessio Campisi2,3, Luca Bertolaccini4
1Division of Thoracic Surgery, Department of Cardiothoracic Surgery and Vascular Sciences, Padua University Hospital, University of Padua, 35128 Padua, Italy.
Background:
Surgery for non-small-cell lung cancers (NSCLCs) invading the superior vena cava (SVC) is rarely performed due to surgical complexities and reported poor prognoses. Different methods have been described to reconstruct the SVC, such as direct suture, patch use or prosthesis, according to its circumferential involvement. The aim of our study was to analyze the short- and long-term results of different types of SVC resection and reconstruction for T4 NSCLCs.
Methods:
Between January 2000 and December 2019, 80 patients received an anatomical lung resection with SVC surgery in this multicenter retrospective study. The partial resection and direct suture or patch reconstruction group included 64 patients, while the complete resection and prosthesis reconstruction group included 16 patients. The primary endpoints were as follows: long-term survival and disease-free survival. The secondary endpoints were as follows: perioperative complications and 30- and 90-day mortality. Unpaired t-tests or Mann-Whitney U tests for non-parametric variables were applied to discrete or continuous data, and the chi-square test was applied to dichotomous or categorical data. Survival rates were calculated using the Kaplan-Meier method and compared using the log-rank test.
Results:
No differences were found between the two groups in terms of general characteristics and surgical, oncological and survival outcomes. In particular, there were no differences in terms of early (50.0% vs. 68.8%, p = 0.178) and late complication frequency (12.5% vs. 12.5%, p = 1.000), 30- and 90-day mortality, R status, recurrence, overall survival (33.89 ± 40.35 vs. 35.70 ± 51.43 months, p = 0.432) and disease-free survival (27.56 ± 40.36 vs. 31.28 ± 53.08 months, p = 0.668). The multivariate analysis demonstrated that age was the only independent predictive factor for overall survival.
Conclusions:
According to our results, SVC resection has good oncological and survival outcomes, regardless of the proportion of circumferential involvement and the type of reconstruction.
