Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Mild bibasilar opacities are noted and likely representative of atelectasis , right greater than left . Otherwise , the lungs are without a focal consolidation , effusion , or pneumothorax . There is mild prominence of the pulmonary vasculature without overt edema . Cardiac silhouette appears prominent but stable . Mild degenerative changes visualized throughout the thoracic spine .
    OUTPUT:
    
Mild bibasilar opacities , right greater than left , are most likely representative of atelectasis . However , pneumonia must be excluded in the proper clinical setting .