Author of

• 10962

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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
  • Moderators:
  • Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 10973

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    P1.20-011 - Retrospective Study of Lung Cancer Screening. (ID 3372)

    09:30 - 09:30  |  Author(s): R. Tachi
    • 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.

• 12701

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  P3.12 - Poster Session 3 - NSCLC Early Stage (ID 206)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Medical Oncology
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/30/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 12721

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    P3.12-020 - Derailed analysis of lung cancer with scattered consolidation (ID 3236)

    09:30 - 09:30  |  Author(s): R. Tachi
    • Abstract

    Background
    Background: We have reported that the definition of lung cancer with scattered consolidation (LCSC) was difficult to measure the size of ground glass opacity (GGO) on thin section computed tomography (Matsunaga T, Suzuki K, et al. Interact Cardiovasc Thorac Surg. 2013).To add to clinicopathological features, We investigate in LCSC in detail.

    Methods
    Methods: Between Jan.2009 and Oct.2012, 590 consecutive patients underwent pulmonary resection for lung cancer with clinical stage IA and are performed on thin section computed tomography for preoperative evaluation. Among them, 79 patients (13.4%) who had lung cancers in which it was difficult to measure the size of consolidation tumor ratio (CTR) were investigated in this study. LCSC was divided into three categories: tumor with discontinuous consolidation like islands (small islands type); tumors with reticulate consolidation (reticulation type); tumors with denser GGO (denser type). The medical record of each patient was examined for the frequency of pathological nodal status, lymphatic invasion, vascular invasion, and adenocarcinoma in situ (AIS).

    Results
    Results: All of LCSC patients are adenocarcinoma. No nodal involvement was observed in all cohort. Pathological lymphatic invasion were found in 5 (17.2%) out of 29 pts with island type, 2 (7.4%) out of 27 patients with reticular type, 1 (4.3%) out of 23 patients with denser type.. Vascular invasion was found in 3 (11.5%), 2 (7.4%), and 0 (0%), respectively. AIS were included in 3 (11.5%), 5 (13.5%), and 2 (8.6%), respectively. There were no statistically significant differences.

    Conclusion
    Conclusions: There were no significant differences in the three categories as to pathological invasive factors among LCSC. Vascular and lymphatic invasions were frequently seen in island or reticular type compared with denser type. On the other hand, AIS was frequently seen in denser type.