Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Atherosclerotic calcifications are noted in the aortic knob . Hilar contours are unremarkable . There are subtly increased likely bibasilar peribronchovascular opacities most notable on lateral view which could represent either aspiration or bronchopneumonia . Lungs are otherwise clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
Subtly increased peribronchovascular opacities , possibly bibasilar but definitely on the left , best seen on lateral view which could represent either aspiration or bronchopneumonia .