[Lung cancer in chronic inflammatory processes of the bronchi and pulmonary tissue].

An attempt was made to determine the frequency of lung cancer occurrence in different inflammatory processes in the bronchi and pulmonary tissue. 100 cases of lung cancer were studied according to case reports and autopsy finding, the main tumor node and metastases were explored histologically. The data obtained indicated that in 2.2% of cases the development of cancer was preceded by influenza with residual phenomenon such as purulent bronchitis or pneumonia, in 2.3% of cases cancer occurrence was found to be dependent on chronic pneumonia. In 12.1% of cases cancer has arisen in fibrous-focal or cirrhotic tuberculosis with the presence of old caverns; in 14.7% of cases its development was related with pneumosclerosis and bronchiectases, and in 17.8% of cases it developed against the background of purulent bronchitis.