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MA08 - Pawing the Way to Improve Outcomes in Stage III NSCLC (ID 127)
- Event: WCLC 2019
- Type: Mini Oral Session
- Track: Treatment of Locoregional Disease - NSCLC
- Presentations: 1
- Now Available
MA08.05 - A Multi-Center Analysis of Right vs Left-Sided Pneumonectomy Following Induction Therapy (Now Available) (ID 1178)
15:15 - 16:45 | Author(s): Robert McKenna
Previous single-center studies of pneumonectomy following induction therapy for non-small-cell lung cancer (NSCLC) have found a significant perioperative risk associated with right-sided pneumonectomy. We examined the impact of laterality on long-term survival after induction therapy followed by pneumonectomy in a multi-institutional analysis.Method
Perioperative and long-term outcomes of patients with NSCLC who underwent pneumonectomy following induction chemotherapy with or without radiation from 2000-2016 across 3 institutions were evaluated using multivariable logistic regression, Cox proportional hazards modeling and propensity score-matched analysis. Patients who underwent a completion pneumonectomy or who had M1 disease were excluded from the analysis.Result
During the study period, 172 patients (right n = 78 [45%], left n = 94 [55%]) met inclusion criteria. Right-sided pneumonectomy was associated with a similar perioperative complication rate (38% [30/78] vs 27% [25/94], p=0.10), and 30-day (13% [10/78] vs 9% [8/94], p=0.36) and 90-day mortality (23% [18/78] vs 13% [12/94], p=0.08) when compared to left-sided pneumonectomy. In multivariable analysis, right-sided pneumonectomy was not found to be a predictor of higher perioperative complications (OR 0.85 [95% CI: 0.33-2.14], p=0.73) or 30-day (OR 2.06 [95% CI: 0.44-9.69], p=0.36) and 90-day mortality (OR 2.06 [95% CI: 0.54-7.88], p=0.29). Overall survival between right and left pneumonectomy was not significantly different in unadjusted (5-year survival 30% [95% CI: 19%-41%] vs 29% [95% CI: 20%-39%], log-rank p=0.77 [Figure]) or multivariable analysis (adjusted hazard ratio, 1.05 [95% CI: 0.63-1.76], p = 0.84). A propensity score-matched analysis of 108 patients balancing baseline characteristics—including pulmonary function, tumor size and stage—was also performed, and found no significant differences in perioperative complication rates (46% [25/54] vs 48% [26/54], p=0.85), 30-day (17% [9/54] vs 7% [4/54], p=0.14) and 90-day mortality (26% [14/54] vs 13% [7/54], p=0.09) between right versus left pneumonectomy, respectively. Overall survival was not significantly different between right- and left-sided pneumonectomy (5-year survival 33% [95% CI: 20%-47%] vs 28% [95% CI: 16%-41%], log-rank p=0.98).
In this multi-center analysis, right-sided pneumonectomy after induction therapy was not associated with significantly higher perioperative mortality rates or worse long-term survival when compared to a left-sided pneumonectomy.
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