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Vol.41 No.3 contents | Japanese/English |
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- Original Article -
Screening for Lung Cancer With Successive Ten Years Follow-up
Noriki Kamiya1,2, Kiyoshi Mori1 and Keigo Tominaga11)Department of Thoracic Disease, Tochigi Cancer Center, 4-9-13 Younan, Utsunomiya, Tochigi, Japan, 2)Department of Surgery, Kitasato Institute Medical Center Hospital, 6-100 Arai, Kitamoto, Saitama, Japan
Objective: We assessed whether lung cancer screening with a chest x-ray could contribute to early detection. Methods: The Tochigi Cancer Center lung cancer screening program has evaluated for ten years the annual chest x-ray and sputum cytology in a high risk group for early detection. We have screened 2500 individuals for ten years. Results: Of 26,129 screening examirations, further work-up was required 938 because of abnormal findings. In 16 of 908 examined further lung cancers were detected and of these 13 cases were surgically confirmed, and three were clinically diagnosed. The mean size of lesions detected was 2.6 cm. The other lung cancers, excluding one case, were peripheral (7 stage I, 7 stage IIIA, 1 stage IIIB, 1 stage IV). The only lung cancer detected by sputum cytology was a peripheral adenocarcinoma. Comparing the group detected on first screening with the group detected on subsequent screenings, there was no significant difference in the mean size of lesions of the proportion of stage I cases. Conclusion: We think that conventional chest radiography might be inadequate as a screening technique for early detection of lung cancers that are curable by surgery. A potentially useful screening method in the detection of early peripheral lung cancer preventing its death is CT screening.
key words: Lung cancer, Screening, Chest radiograph
Received: October 23, 2000
Accepted: April 12, 2001
JJLC 41 (3): 213-215, 2001
