1. Time Trends of Surgical Outcome in Patients with Non-small Cell Lung Cancer 
Takeshi Hanagiri, MD, PhD, Tetsuro Baba, MD, PhD, Tetsuya So, MD, PhD, Manabu Yasuda, MD, PhD, Masakazu Sugaya, MD, PhD, Kenji Ono, MD, PhD, Tomoko So, MD, PhD, Hidetaka Uramoto, MD, PhD, Mitsuhiro Takenoyama, MD, PhD, Kosei Yasumoto, MD, PhD 
Journal of Thoracic Oncology 
Volume 5, Issue 6, Pages (June 2010)
DOI: /JTO.0b013e3181d5e47f
Copyright © 2010 International Association for the Study of Lung Cancer Terms and Conditions

2. FIGURE 1
Change in the pathologic stage of non-small cell lung cancer according to the periods. The percentage of pathologic stage IA lung cancers in each period was 16.2, 21.5, 23.0, 38.5, and 52.0%, respectively. No significant changes were observed in the proportion of each stage between 1979 and However, the incidence of patients presenting with stage IA disease has risen rapidly since 1999.
Journal of Thoracic Oncology 2010 5, DOI: ( /JTO.0b013e3181d5e47f)
Copyright © 2010 International Association for the Study of Lung Cancer Terms and Conditions

3. FIGURE 2
Comparison of the histologic types between the former and the latter periods. When these groups were divided into the former (1989–1998) and the latter periods (1999–2008), the percentage of adenocarcinoma significantly increased, when compared between the two periods (52.2 vs. 66.5%; p < 0.001). In contrast, the average percentage of squamous cell carcinoma changed significantly from 36.2 to 24.2% between the former and the latter periods (p < 0.001).
Journal of Thoracic Oncology 2010 5, DOI: ( /JTO.0b013e3181d5e47f)
Copyright © 2010 International Association for the Study of Lung Cancer Terms and Conditions

4. FIGURE 3
Comparison of the tumor diameter between the former and the latter periods. The tumor size at the time of diagnosis tended to decrease, especially since When these groups were divided into the former (1989–1998) and the latter periods (1999–2008), a significant decrease in the tumor size was observed.
Journal of Thoracic Oncology 2010 5, DOI: ( /JTO.0b013e3181d5e47f)
Copyright © 2010 International Association for the Study of Lung Cancer Terms and Conditions

5. FIGURE 4
Overall survival curves for patients according to the periods. The overall survival in each period was analyzed by the Kaplan-Meier method. The postoperative 5-year survival rates during the five periods improved markedly. The survival rate of both periods of 1999–2004 and 2004–2008 was significantly better than that of any previous three periods (1979–1998) (p < 0.01).
Journal of Thoracic Oncology 2010 5, DOI: ( /JTO.0b013e3181d5e47f)
Copyright © 2010 International Association for the Study of Lung Cancer Terms and Conditions

6. Journal of Thoracic Oncology 2010 5, 825-829DOI: (10. 1097/JTO
Journal of Thoracic Oncology 2010 5, DOI: ( /JTO.0b013e3181d5e47f)
Copyright © 2010 International Association for the Study of Lung Cancer Terms and Conditions