Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Elevation of the right hemidiaphragm is unchanged . There is a small right pleural effusion , similar in size compared to the previous exam . Previously noted small left pleural effusion appears resolved . Minimal linear and streaky opacities in the lung bases likely reflect atelectasis . No focal consolidation or pneumothorax is demonstrated . There is no pulmonary edema . No acute osseous abnormalities are demonstrated .
    OUTPUT:
    
Chronic elevation of the right hemidiaphragm and small right pleural effusion , unchanged compared to the previous exam . Previously noted small left pleural effusion has resolved . Mild bibasilar atelectasis .