Clinical X-ray characteristics of chronic bronchitis in workers of coal mines

100 workers of coal mines with chronic dusty bronchitis are examined. The roentgenological manifestations of different stages of the diseases with respect to the clinical picture and function of external breath according to the data of roentgenopneumopolygraphy, are characterized. The attention is paid to a most pronounced violation of external breath function in this category of patients. The peculiarities of clinico-roentgenological picture of dust bronchitis found should be taken into account when solving the problems of medical labor examination. 8 refs.; 3 figs