1978 Volume 28 Issue 3 Pages 245-252
There were 115 cases which were performed surgical treatment at the department of thoracic surgery, Gunma Cancer Center Hospital in the past 3 years from 1974 to 1976. These 115 cases consisted of 41 cases (37.5%) of lung cancer, 28 cases (24.3 %) of pulmonary tuberculosis and 19 cases (16.5%) of mediastinal tumor.
From 1974, we applied the mass survey technic to detect lung cancer and 78 cases of lung cancer were detected in this 3 years from 485, 145 inhabitants' X-ray films in the east district of Gunma. The incidence of lung cancer occurence for a population of 100, 000 in this district was 17. On the other hand, lung cancer detected in the outpatients was 99 cases.
In these 177 cases of lung cancer, the resected cases were 30 (16.9%) and 21 cases were in the mass survey, and 9 cases were in the outpatients. The incidence of lung resection was 26.9%, and 9.1%, respectively. In the resected cases, the survival rate over 3 years was 73.3% in the mass survey, and 50%, in the outpatients.
These data suggested that the mass survey was useful to detect lung cancer in its early stage.
