Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiographs from ___ , bibasilar opacities have resolved . There is no focal consolidation , pleural effusion or pneumothorax . No central vascular congestion or overt pulmonary edema . Mediastinum , hila and pleural surfaces are unremarkable . The cardiomediastinal silhouette is normal . Posterior spinal fusion hardware is noted .
    OUTPUT:
    
No evidence of pneumonia . Resolved bibasilar atelectasis .