Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph is compared to radiograph dated ___ . Relative to prior examination , there has been little interval change . Heart is mildly enlarged . Hilar contours are stable in appearance . No focal opacity convincing for pneumonia is identified . Linear densities at bilateral bases is most likely reflective of platelike atelectasis . There is no pleural effusion or pneumothorax . Visualized osseous structures demonstrate no acute abnormality .
    OUTPUT:
    
Bibasilar atelectasis . No focal consolidation convincing for pneumonia .