Complex unsaturated alicylic acids Disolving rings of carbon atoms Endoscopia with the help of steroids The cause of implicated carcinogenesis Chest wounds Letting air Deep into The pleural space Antibionic treatement Of pneumonothorax disease Performing an insane Collapese therapy Postural drainage So that secrations may flow out Of the lung or bronchi By gravity pull Pneumonovascular carcinogenesis