<prompt> Answer this question truthfullyIn cases of pertussis, what is shown by a chest x-ray?  <response>: <reason> Chest radiography is usually unremarkable among patients with pertussis. Possible findings include: Atelectasis Lymphadenopathy Typically, lung consolidation is suggestive of a co-infection or a different diagnosis. Pneumothorax, pneumomediastinum, or air in the soft tissues can be a complication of violent coughing. 