<s>[INST] Hello doctor, good day, im 25 y/o male, non smoker, occasional alcohol drinker, no asthma. I just got my xray result and it says pulmonary hyperaeration bilateral. Is this result a bad sign? I have cough and tonsillitis 5 days prior to chest xray. thanks. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Chest x-ray is just a screening tool for lung diseases. Bilateral pulmonary hyperinflation can be a normal finding if chest x-ray is taken after deep inspiration. So no need to worry about any lung disease or damage by this x-ray finding. Better to get done PFT (Pulmonary Function Test). If PFT is normal then your lungs are properly functioning. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>