Choice of surgical procedure - lobectomy, segmentectomy, or wedge resection - for patients with stage T1-2N0M0 small cell lung cancer: A population-based study.

BackgroundTo date, few studies have evaluated the impact of lobectomy versus sublobar resection for early small cell lung cancer (SCLC). We investigated the survival rates of patients with pathological stage T1-2N0M0 SCLC who underwent lobectomy or sublobar resection. MethodsWe identified 548 SCLC patients in the Surveillance, Epidemiology, and End Results database who underwent lobectomy or sublobar resection. Propensity score matching (PSM) and Cox regression analysis were used to adjust for baseline characteristics. ResultsThe three-year overall survival (OS) of patients treated with lobectomy (n=376, 60%) was significantly higher than those treated with sublobar resection (n=172, 38%). PSM and Cox multivariable analysis further confirmed this result (hazard ratio [HR] 0.543, 95% confidence interval [CI] 0.421-0.680; P<0.001). The three-year OS of patients treated with segmentectomy (n=24, 54%) and wedge resection (n=148, 36%) was not significantly different (HR 0.639, 95% CI 0.393-1.039; P=0.071). Based on PSM analysis, segmentectomy conferred a superior survival advantage to patients relative to wedge resection (HR 0.466, 95% CI 0.221-0.979; P=0.040). ConclusionLobectomy correlated with superior survival. For patients in which lobectomy is unsuitable, prognosis following segmentectomy appears to be better than after wedge resection.