Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low with bibasilar atelectasis noted . No convincing sign of pneumonia edema effusion or pneumothorax . Heart size is difficult to assess . Mediastinal contour is normal . No acute bony abnormalities .
    OUTPUT:
    
Bibasilar atelectasis . Please refer to subsequent CT of the chest for further details .