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Comparison of Segmentectomy and Lobectomy in Stage IA Adenocarcinomas

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Presentation on theme: "Comparison of Segmentectomy and Lobectomy in Stage IA Adenocarcinomas"— Presentation transcript:

1 Comparison of Segmentectomy and Lobectomy in Stage IA Adenocarcinomas
Ze-Rui Zhao, MD, Dong-Rong Situ, MD, Rainbow W.H. Lau, MbChB., Tony S.K. Mok, MD, FRCPC, George G. Chen, PhD, Malcolm J. Underwood, MD, Calvin S.H. Ng, MD  Journal of Thoracic Oncology  Volume 12, Issue 5, Pages (May 2017) DOI: /j.jtho Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

2 Figure 1 Flow diagram of the study.
Journal of Thoracic Oncology  , DOI: ( /j.jtho ) Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

3 Figure 2 (A) Standardized differences of variables between patients who received lobectomy and segmentectomy. Red crosses symbolize differences before propensity matching and blue circles symbolize differences after propensity matching. Propensity score matching effectively reduced heterogeneity among variables between the two groups in comparison. (B) Mirror histogram of propensity scores for patients who received segmentectomy (below the horizontal line at zero) and lobectomy (above the horizontal line at zero). Matched patients are a subset of the original patient population and their volumes are highlighted in color. Matched groups have similar propensity score distributions. Journal of Thoracic Oncology  , DOI: ( /j.jtho ) Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

4 Figure 3 Survival curves adjusted for age, sex, histological subtype, and lymph node quantity compare treatment with segmentectomy versus with lobectomy in patients with pathological stage IA adenocarcinoma (>10 and ≤20 mm) after propensity score matching for overall (A) and lung cancer–specific (B) survival. Shaded area represents the confidence limits for each group. Journal of Thoracic Oncology  , DOI: ( /j.jtho ) Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

5 Figure 4 Multivariable Cox proportional hazards model adjusted for age, sex, histological type, and lymph node quantity for overall (A) and lung cancer–specific (B) survival by subgroup analysis in the matched population. Dashed line indicates the prespecified noninferiority margin of Blue shaded band represents the 95% confidence interval (CI) of the hazard ratio (HR) for the overall matched population. BAC, bronchioloalveolar carcinoma; Seg, segmentectomy; Lob, lobectomy. Journal of Thoracic Oncology  , DOI: ( /j.jtho ) Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

6 Supplemental Figure 1 Unadjusted survival curves compare treatment with segmentectomy versus lobectomy in patients with pathological stage IA adenocarcinoma (>10 and ≤20 mm) for overall and lung cancer-specific survival in the entire cohort (A, B), and in the matched population (C, D). The shaded area represents the confidence limits for each group. Journal of Thoracic Oncology  , DOI: ( /j.jtho ) Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

7 Supplemental Figure 2 Unadjusted Survival curves compare different number of lymph nodes evaluated in patients with pathological stage IA adenocarcinoma (>10 and ≤20 mm) in the entire cohort for (A) overall and (B) lung cancer-specific survival. The shaded area represents the confidence limits for each group. Journal of Thoracic Oncology  , DOI: ( /j.jtho ) Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions


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