Abstract:
BACKGROUND:Although radical segmentectomy is an accepted treatment option for small-sized lung cancer, the outcomes remain unclear. The present study aimed to elucidate recurrence patterns and to identify predictors of time to recurrence after intentional segmentectomy for early lung cancer. PATIENTS AND METHODS:Prospectively collected data of 166 patients who could tolerate lobectomy and underwent intentional segmentectomy for clinical stage 0 or IA non-small-cell lung cancer between 2007 and 2016 were retrospectively analyzed. Surgical indication for intentional segmentectomy was clinical stage 0 or IA ground glass opacity-dominant tumor ≤ 3 cm or solid-dominant tumor ≤ 2 cm on high-resolution computed tomography. RESULTS:The median follow-up duration was 48.8 months, during which 6 (3.6%) patients developed recurrences. The 5-year recurrence-free survival and 5-year overall survival rates were 93.1% (95% confidence interval [CI], 87.9%-96.1%) and 93.5% (95% CI, 87.7%-96.4%), respectively. Two (1.2%) patients who developed local-only recurrences subsequently underwent completion lobectomy; no cancer-related deaths were seen for these patients. In multivariable analysis, consolidation to maximum tumor diameter (C/T) ratio (hazard ratio, 1.07; 95% CI, 1.01-1.22; P = .02) was an independent predictive factor for time to recurrence. All 6 patients with recurrence had a tumor with a C/T ratio of 86% or higher. CONCLUSIONS:Based on these findings, favorable survival is expected after intentional segmentectomy for selected patients with clinical stage 0 or IA non-small-cell lung cancer. Patients with a higher C/T ratio tumor appear to be at higher risk of recurrence after intentional segmentectomy.
journal_name
Clin Lung Cancerjournal_title
Clinical lung cancerauthors
Kamigaichi A,Tsutani Y,Fujiwara M,Mimae T,Miyata Y,Okada Mdoi
10.1016/j.cllc.2019.06.004subject
Has Abstractpub_date
2019-09-01 00:00:00pages
397-403.e1issue
5eissn
1525-7304issn
1938-0690pii
S1525-7304(19)30146-9journal_volume
20pub_type
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