Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright chest radiograph demonstrates hyperinflated lungs and emphysematous changes . Patchy bibasilar hazy opacities are noted most pronounced within the right lower lung zone . Heart size is within normal limits . Mediastinal and hilar silhouette is otherwise unremarkable . No overt pulmonary edema , large pleural effusion , or pneumothorax .
    OUTPUT:
    
Hyperinflated lungs with hazy bibasilar , right greater than left , opacity may reflect aspiration , less likely pneumonia though this can not be excluded . No pneumothorax .