Abstract
Bronchogram were made before and after extrapleural pneumothorax in ten cases and pneumoperitoneum in ten cases.
In the moderately collapsed lung treated by extrapleural pneumothorax, decrease of the angle of inclination of main bronchi, shortning or no filling of R. apicalis, R. dorsalis were observed. And yet, all of them were moved towards the mediastinum. R, medius and basal bronchi were slightly moved as findings in thoracoplasty. On the other hand, in the slightly collapsed lung, R. apicalis was inconsiderably and R. dorsalis were remarkedly moved towards spine.
The bronchogram which treated by artificial pneumoperitoneum showed displacement of basal bronchi, especially R. ventrobasalis, and R. retrobasalis, but upper lobe bronchi was not affected.
