Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are no focal opacities to suggest pneumonia . Mild bibasilar atelectasis , left greater than right is noted . Mild cardiomegaly is present . The mediastinal silhouette and hilar contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Mild cardiomegaly . 2 . Bibasilar atelectasis , left greater than right . 3 . No evidence of pneumonia .