Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky linear opacities in the left lung base as well as the right hemithorax are linear atelectasis . No focal consolidations are present that are concerning for pneumonia . The heart size is top normal in size , unchanged . The aorta has a tortuous course , unchanged . There is no pneumothorax or pulmonary edema or pleural effusion .
    OUTPUT:
    
Bibasilar atelectasis without evidence of pneumonia or pneumothorax .