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Effectiveness of Postoperative Irradiation in Stage IIIA Non–Small Cell Lung Cancer According to Regression Tree Analyses of Recurrence Risks  Timothy.

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Presentation on theme: "Effectiveness of Postoperative Irradiation in Stage IIIA Non–Small Cell Lung Cancer According to Regression Tree Analyses of Recurrence Risks  Timothy."— Presentation transcript:

1 Effectiveness of Postoperative Irradiation in Stage IIIA Non–Small Cell Lung Cancer According to Regression Tree Analyses of Recurrence Risks  Timothy E. Sawyer, MD, James A. Bonner, MD, Perry M. Gould, MD, Robert L. Foote, MD, Claude Deschamps, MD, Victor F. Trastek, MD, Peter C. Pairolero, MD, Mark S. Allen, MD, Carla M. Lange, BS, Hongzhe Li, PhD  The Annals of Thoracic Surgery  Volume 64, Issue 5, Pages (November 1997) DOI: /S (97) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

2 Fig 1 Patients at low, intermediate (Int), and high risk for local recurrence were identified. (Neg=negative.). The Annals of Thoracic Surgery  , DOI: ( /S (97) ) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

3 Fig 2 Patients at low, intermediate, and high risk for death were identified. The Annals of Thoracic Surgery  , DOI: ( /S (97) ) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

4 Fig 3 The freedom from local recurrence rates in the low-, intermediate-, and high-risk groups were found to be well separated. The Annals of Thoracic Surgery  , DOI: ( /S (97) ) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

5 Fig 4 The survival rates in the low-, intermediate-, and high-risk groups were found to be well separated. The Annals of Thoracic Surgery  , DOI: ( /S (97) ) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

6 Fig 5 Adjuvant irradiation was associated with a higher freedom from local recurrence rate in patients at both high risk (right; 46 patients) and intermediate risk (middle; 116 patients) for local recurrence. This also was true in low-risk (left; 61 patients) patients, although this difference was not statistically significant. The Annals of Thoracic Surgery  , DOI: ( /S (97) ) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

7 Fig 6 Adjuvant irradiation was associated with a higher survival rate in patients at both high risk (right; 65 patients) and intermediate risk (left; 149 patients) for death. There were only 9 patients in the low-risk category. The Annals of Thoracic Surgery  , DOI: ( /S (97) ) Copyright © 1997 The Society of Thoracic Surgeons Terms and Conditions

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