Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky linear opacities at the bases of the lungs are slightly increased from the prior exam , and consistent with atelectasis . There is no new opacity to suggest pneumonia . There is no pulmonary edema , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Bibasilar atelectasis . No evidence of pneumonia .