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H. Kobayashi



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    O09 - General Thoracic Surgery (ID 100)

    • Event: WCLC 2013
    • Type: Oral Abstract Session
    • Track: Surgery
    • Presentations: 1
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      O09.02 - Clinicopathological characteristics and surgical results of lung cancer patients aged up to 50 years: the Japanese Lung Cancer Registry Study 2004 (ID 83)

      16:15 - 17:45  |  Author(s): H. Kobayashi

      • Abstract
      • Presentation
      • Slides

      Background
      Since the incidence of lung cancer death increases from 50 years-old, the surgical results of young lung cancer patients remains unclear.

      Methods
      Seven hundred and four patients with lung cancer, aged up to 50 years, were enrolled from among the 11,663 patients registered in the Japanese Lung Cancer Registry Study 2004, and their clinical data were compared with those of 10959 patients older than 50 years.

      Results
      In the young/old groups, pneumonectomy was performed in 5.7%/3.2%; adjuvant therapies were given preoperatively in 10.4%/4.7% (p<0.001) and postoperatively in 31.4%/24.5% (p<0.001). The proportions of patients with p-stage IIIA and adenocarcinoma histology were higher in the young group. The 5-year overall survival rate (5Y-OS) was 94.8%/86.2% for p-stage IA (p<0.001), 87.0%/73.2% for p-stage IB (p=0.001), 61.0%/61.6% for p-stage IIA (p=0.595), 71.0%/48.4% for p-stage IIB (p=0.003), 49.6%/39.4% for p-stage IIIA (p=0.020), and 80.0%/24.8% for p-stage IIIB (p=0.012); it was 83.5%/80.7% for females (p=0.106) and 75.1%/62.3% for males (p<0.001) in the young/old groups. The postoperative survival was significantly better with all operative procedures in the young group. The 5Y-OS after recurrence was better in the young group (17.9%, p=0.016). In the young group, the 5Y-OS was better in females (83.5%) than in males (75.1%, p=0.002), and for patients with adenocarcinoma (80.3%) than for those with squamous cell carcinoma (68.5%, p=0.013). Age up to 50 years was identified as an independent prognostic factor on multivariate analysis. Figure 1

      Conclusion
      The postoperative survival in lung cancer patients aged up to 50 years was better than that in patients older than 50 years.

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    P2.22 - Poster Session 2 - Epidemiology, Etiology (ID 167)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Prevention & Epidemiology
    • Presentations: 1
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      P2.22-001 - Japanese Nation Wide Lung Cancer Registries conducted by the Japanese Joint Committee of Lung Cancer Registry (JJCLCR) (ID 66)

      09:30 - 16:30  |  Author(s): H. Kobayashi

      • Abstract

      Background
      The Japanese Joint Committee of Lung Cancer Registry (JJCLCR) is jointly established by the Japan Lung Cancer Society, the Japanese Respiratory Society, the Japanese Association for Chest Surgery and the Japan Society for Respiratory Endoscopy, conducting Japanese nation-wide registries of lung cancer patients

      Methods
      In 1999, 2004 and 2009, registries were conducted for surgical patients in 1994, 1999 and 2004, respectively. In 2002, both surgical and non-surgical (non-biased) patients in 2002 were registered with a follow up period of 3 years or more. In 2012, a registry has been conducted for non-surgical patients in 2012 with a follow up period of 3 years. In 2016, surgical patients in 2010 will be registered. These registries were observationally assessed.

      Results
      Registries for surgical cases in 1994, 1999 and 2004 which were conducted in 1999, 2004 and 2009 revealed the trend of increase in mean age, rates of female, the aged, small sized lesion, adenocarcinoma and stage I, and that of decrease in the rate of perioperative death. Furthermore proposals for TNM classification were stated as peer reviewed papers- invasion to visceral pleura, chest wall and fat tissue in the mediastinum for T factor. In addition, status of N2 disease were assessed resulting in that highly selected cases (3.8%) were subjected to surgery or surgery-included multimodal therapy with a 5-year survival rate of 30.1% in cN2/pN2-Stage IIIA and it was better than previous registries. Registry for surgical and non-surgical patients in 2002 revealed that stage-specific prognosis was within a range similar to other reports and stage, gender, surgery and performance status were independent prognostic indicator of both non-small and small cell lung cancer. Registry of non-surgical cases in 2012 was conducted and greater than 8,000 cases were registered. In this study, status of usage of FDG-PET scan for staging, EGFR gene mutation and individual therapy were, and prognosis of patients will be registered. In up-coming registry for surgical cases in 2010 which will be performed in 2016, new parameters- the size of tumor regarding non-invasive regions in adenocarcinoma (ground grass opacity in computed tomography), quantitative assessment of lymph node metastasis (the number of metastasized lymph node) as a prognostic indicator, which may be assessed as factors of TNM classification in the future. Besides, the TNM classification will be revised in 2016 according to the proposal from IASLC staging project, to which the JJCLCR offered data of 47,306 cases (approximately 25% of whole world wide cases) from the recent 4 registries.

      Conclusion
      The JJCLCR conducted nation-wide lung cancer registry in Japan, revealing the condition of the treatment of lung cancer and contributing to the TNM staging program.