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  • Title: A national analysis of wedge resection versus stereotactic body radiation therapy for stage IA non-small cell lung cancer.
    Author: Yerokun BA, Yang CJ, Gulack BC, Li X, Mulvihill MS, Gu L, Wang X, Harpole DH, D'Amico TA, Berry MF, Hartwig MG.
    Journal: J Thorac Cardiovasc Surg; 2017 Aug; 154(2):675-686.e4. PubMed ID: 28461054.
    Abstract:
    OBJECTIVE: Lobectomy is considered optimal therapy for early-stage non-small cell lung cancer, but sublobar wedge resection and stereotactic body radiation therapy are alternative treatments. This study compared outcomes between wedge resection and stereotactic body radiotherapy. METHODS: Overall survival of patients with cT1N0 and tumors ≤2 cm who underwent stereotactic body radiotherapy or wedge resection in the National Cancer Data Base from 2008 to 2011 was assessed via a Kaplan-Meier and propensity score-matched analysis. A center-level sensitivity analysis that used observed/expected mortality ratios was conducted to identify an association between center use of stereotactic body radiotherapy and mortality. RESULTS: Of the 6295 patients included, 1778 (28.2%) underwent stereotactic body radiotherapy, and 4517 (71.8%) underwent wedge resection. Stereotactic body radiotherapy was associated with significantly reduced 5-year survival compared with wedge resection in both unmatched analysis (30.9% vs 55.2%, P < .001) and after adjustment for covariates (31.0% vs 49.9%, P < .001). Stereotactic body radiotherapy also was associated with worse overall survival than wedge resection after 2 subgroup analyses of propensity-matched patients (P < .05 for both). Centers that used stereotactic body radiotherapy more often as opposed to surgery for patients with cT1N0 patients with tumors <2 cm were more likely to have an observed/expected mortality ratio > 1 for 3-year mortality (P = .034). CONCLUSIONS: In this national analysis, wedge resection was associated with better survival for stage IA non-small cell lung cancer than stereotactic body radiotherapy.
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