Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval improvement in airspace opacity in the left mid lung , likely from improvement in aspiration pneumonitis . The lungs demonstrate bibasilar atelectasis , left greater than right , new from prior without effusion or pneumothorax . Right parahilar airspace opacity likely reflects aspiration . The pulmonary vasculature remains normal . The cardiac silhouette is normal in size , and the aortic contour is tortuous with note of atherosclerotic calcification . A two - lead left chest pacemaker is unchanged .
    OUTPUT:
    
Bibasilar atelectasis , with interval improvement in left mid lung airspace abnormality consistent with improved aspiration pneumonitis . There is new bibasilar atelectasis and right parahilar airspace opacity .