Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An NG type tube is present , with tip beneath the diaphragm , overlying the stomach . The cardiomediastinal silhouette is within normal limits . There is some patchy opacity is at both lung bases medially . There is upper zone redistribution , but no overt CHF . No gross effusion .
    OUTPUT:
    
Compared with ___ , there are new bibasilar bibasilar opacities . The differential diagnosis includes atelectasis , aspiration , an early pneumonic infiltrates .