Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild bibasilar opacities are most suggestive of consistent with atelectasis in the setting of low lung volumes . The cardiac silhouette is mildly accentuated . The hilar contours and pleural surfaces are normal . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
Opacities probably due to atelectasis in the lower lungs ; however an infectious etiology can not be excluded by this study and short - term follow - up radiographs may be helpful to assess further if clinically indicated . Findings discussed with Dr . ___ at 11 :20 pm on ___ .