[The early detection of stomach and lung cancer during the dispensary care of the population].

The system of early detection of cancer of the stomach and lung was developed on the basis of two-stage automated screening which involved questionnaires, instrumental and laboratory examination, and formation of high-risk and follow-up groups. Gastric and lung cancer were diagnosed in 1.5 and 1.3% of cases of high-risk groups, respectively. Stage I-II tumors made 80.8% of gastric cancer and 20.7% of lung malignancies. In the follow-up groups, all gastric tumors and half of lung neoplasms were diagnosed at early stages. The procedure described assures lower percentage of advanced tumors of the stomach and lung at diagnosis.