Abstract
Objectives: This study clarified the results of surgery for primary lung cancer based on the new international staging system.Background: On December 1997, the Japan Lung Cancer Society adopted a new TNM staging system which had already received international recognition.Subjects and Methods: The subjects of this study were 1062 consecutive previously untreated patients who underwent pulmonary resection for primary non-small cell lung cancer between January 1975 and December 1992.Results: The postoperative 5-year survival rate for all patients was 58.5%. Pathological staging demonstrated a survival rate which was 73.2% in stage 1,46.8% in stage H, 26.7% in stage in, and 20.0% in stage IV. In the staging subgroups, the survival rate was 79.6% in stage IA, 62.4% in stage IB, 62.2% in stage HA, 42.0% in stage IIB, 26.9% in stage IIIA, and 26.3% in stage IIIB. Concerning the pm patients, the survival rate was 20.2% in pml and 20.0% in pm2, while the survival rate of the patients with NO was 45.7% in pml and 40.0% in pm2.Conclusions: A significant difference in the 5-year survival rate was recognized between the new stages IA and IB, and between the new stages IIA and IIB. When pm patients are diagnosed without lymph node metastasis, the opportunity for resection should not be lost.
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Koike, T., Terashima, M., Takizawa, T. et al. Results of surgery for primary lung cancer based on the new international staging system. Jpn J Thorac Caridovasc Surg 47, 313–317 (1999). https://doi.org/10.1007/BF03218017
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DOI: https://doi.org/10.1007/BF03218017