Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is generous heart size and widened mediastinum , not significantly changed from prior exam . There is patchy fluffy opacities bilaterally , right worse than left , in obscuration of the bilateral diaphragm . Degenerative changes of the bilateral AC joints and of the spine are noted . Aortic calcifications noted .
    OUTPUT:
    
Pulmonary edema with bibasilar atelectasis , pneumonia can not be excluded .