@article{oai:nagasaki-u.repo.nii.ac.jp:00020070,
 author = {Soda, Hiroshi and Oka, Mikio and Tomita, Hiroshi and Watanabe, Masami and Hirose, Kiyoto and Kohno, Shigeru and Hara, Kohei},
 issue = {4},
 journal = {Acta medica Nagasakiensia},
 month = {Dec},
 note = {To evaluate the radiologic influence of tuberculous scar on the detection of lung cancer, the results of radiologic screening were retrospectively analyzed. A total of 308, 565 persons above 40 years old underwent the screening from 1986 to 1988. For screening, 100-mm indirect chest radiographs were interpreted by two physicians, and compared to findings on one-year old films if necessary. The screening detected 175 peripheral lung cancers and 25,238 tuberculous scars. Both diseases were prevalent in the elderly. Twenty-seven of 175 lung cancers coexisted with tuberculous scar. The high incidence of tuberculous scar in the elderly caused the seeming increase in the incidence of coexistence of lung cancer. In 14 of 21 coexistent cases reviewed, lung cancer was identified retrospectively on one-year old radiographs. In six patients, lung cancer was misinterpreted as a part of tuberculous scar, despite comparison to one-year old films. The present study suggests that radiographs showing tuberculous scar should be carefully compared to previous films taken at least two years earlier., Acta medica Nagasakiensia. 1994, 39(4), p.72-75},
 pages = {72--75},
 title = {Pulmonary Tuberculous Scar as a Factor Affecting Detection of Lung Cancer},
 volume = {39},
 year = {1994}
}