Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . Mild cardiomegaly is stable . Eventration of the right hemidiaphragm is unchanged . Bilateral lower lobe opacities are most consistent with atelectasis . Pulmonary vascular markings are normal . No pneumothorax . Severe bilateral glenohumeral and acromioclavicular degenerative changes are similar to prior .
    OUTPUT:
    
Bibasilar atelectasis without focal consolidation worrisome for pneumonia .