Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable image was obtained . The lungs are hyperinflated . Subtle right base opacity is likely atelectasis , but in the appropriate clinical setting , mild infection or aspiration is not excluded . Cardiac silhouette is top normal . Aorta is calcified and tortuous . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Lungs are hyperinflated , suggesting COPD . Subtle right base opacity is likely atelectasis , but in the appropriate clinical setting , early infection or aspiration is not excluded . PA and lateral views if patient able , may be helpful for further evaluation .