Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . The mediastinal contour is unremarkable . Bibasilar ill - defined airspace opacities are concerning for multifocal pneumonia . Mild pulmonary vascular congestion is present without overt pulmonary edema . No large pleural effusion or pneumothorax is detected . Mild degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Ill - defined bibasilar airspace opacities concerning for multifocal pneumonia . Mild pulmonary vascular congestion .