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Y. Morishige



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    P1.20 - Poster Session 1 - Early Detection and Screening (ID 172)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Imaging, Staging & Screening
    • Presentations: 1
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      P1.20-011 - Retrospective Study of Lung Cancer Screening. (ID 3372)

      09:30 - 09:30  |  Author(s): Y. Morishige

      • Abstract

      Background
      The lung cancer screening in Japan is only chest radiography now. But in 2011, the national lung screening trial research team was reported reduced lung-cancer mortality with low-dose computed tomographic screening. We studied lung cancer patients about a difference of a screening type, for example radiography and computed tomography.

      Methods
      From January 2008 through May 2013, we performed the operation of 1344 lung cancer patients. In those patients, 1018 patients were proved the type of screening.

      Results

      symptom radiography CT
      pt 146 340 378
      age 64±1 64±0.7 67±0.5
      cStage IA 50 199 296
      IB 22 66 42
      IIA 18 25 6
      IIB 15 13 8
      IIIA 25 21 12
      IIIB 6 4 2
      IV 7 3 1
      pStage IA 35 155 259
      IB 18 57 53
      IIA 12 31 13
      IIB 16 23 11
      IIIA 41 50 30
      IIIB 6 4 1
      IV 12 7 4
      The number of patients by symptom, radiography and computed tomography are 146 (14%), 340 (33%) and 378 (37%), respectively. The rate of clinical stage I (789, 78%) are 72 (7%), 265 (26%), 338 (33%), respectively. The rate of pathological stage I (672, 66%) are 53 (5%), 212 (21%), 312 (31%), respectively. On the other hand, the rate of clinical III are 31 (3%), 25(2%), 14 (1%), respectively. The rate of pathological III are 47 (5%), 54 (5%), 31 (3%), respectively. The difference of between clinical stage I and screening type are 0.000, 0.813, and 0.000, respectively. The difference of between pathological stage I and screening are 0.000, 0.081, and 0.000, respectively.

      Conclusion
      In the group of symptom and radiography, there are a lot of advanced lung cancer patients, while in the group of computed tomography, we can detect a lot of early lung cancer patients. Computed tomography is better than the other screening about the detecting lung cancer. We should use a computed tomography in screening of lung cancer.