Abstract
Although lobectomy has long been considered the standard procedure for Stage I nonsmall cell lung cancer (NSCLC), the selection of sublobectomy for Stage I NSCLC remains controversial. Amidst growing enthusiasm for minimally invasive surgery, the comparison of clinical outcomes after thoracoscopic sublobectomy versus thoracoscopic lobectomy may be of immense value. The present study aimed to compare the overall survival (OS) and disease-free survival (DFS) outcomes of patients who underwent thoracoscopic sublobectomy with those who underwent thoracoscopic lobectomy for Stage I NSCLC. An electronic search was conducted using five online databases from their dates of inception to February 2014. Hazard ratio (HR) was used in this meta-analysis, calculated from the published survival data. Eight studies met the selection criteria, including a total of 1613 patients (463 patients underwent thoracoscopic sublobectomy, and 1150 patients underwent thoracoscopic lobectomy). From the available data, compared with thoracoscopic sublobectomy, there was a significant benefit of thoracoscopic lobectomy on OS (HR: 1.45; 95% confidence interval [CI]: 1.11-1.90; P = 0.007). However, in subgroup analysis of thoracoscopic segmentectomy and thoracoscopic lobectomy, there was no significant difference in OS (HR: 1.03; 95% CI: 0.76-1.39; P = 0.85) or DFS (HR: 1.19; 95% CI: 0.67-2.10; P = 0.56) between the two groups. In addition, compared with thoracoscopic wedge resection, there was a significant benefit of thoracoscopic lobectomy on OS (HR: 4.19; 95% CI: 2.19-8.03, P < 0.0001). For Stage I patients, thoracoscopic segmentectomy leads to survival rates comparable to thoracoscopic lobectomy. However, the overall several of thoracoscopic lobectomy is superior to that of wedge resection.
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