1996 Volume 10 Issue 4 Pages 467-473
Detection and clinical results of treatment for lung cancer have not been satisfactory. Between January 1, 1987, and December 31, 1994, 220 patients were admitted to our hospital for lung cancer : in 39 it was detected by chest x-ray films taken for follow-up of other diseases (other disease group), in 83 it was found in routine screening (mass screening group), and in 98 it was suspected from the symptoms (symptom group). The mean age was 69.4 years (range 61 to 79) in the other disease group, 63.3 years (range 33 to 82) in the mass screening group and 63.7 years (range 32 to 89) in the symptom group. The mean size (longest diameter) of the tumors was 3.3 cm in the other disease group and 4.5 cm in the symptom group, a significant difference. The other diseases for which chest x-rays were taken were hypertension, myocardial infarction, arrhythmia, cardiac valvular disease, deep vein thrombosis, etc.. The 5-year survival rates were 58% for the 32 in the other disease group who had pulmonary resections, 53% for the 79 with resections in the mass screening group and 41% for the symptom group. The patients in the other disease group tended to have a better outcome. We conclude that careful reading of chest x-ray films taken during follow-up examinations of patients with other diseases must be emphasized.