Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lines and Tubes : Endotracheal tube is 2 .4 cm above the carina , in unchanged position . Enteric tube traverses below the diaphragm , distal tip not visualized . Left PICC terminates at the cavoatrial junction . Lungs : The lung volumes are low , however compared to the prior radiograph there is interval improved aeration . Persistent right upper and bilateral lower lobe linear and patchy opacities with interval improvement . Pleura : There is no pleural effusion or pneumothorax Mediastinum : No change in cardiomediastinal silhouette . Bony thorax : No interval change .
    OUTPUT:
    
Persistent low lung volumes with mild interval improvement in aeration and improving right upper and bibasilar opacities . These opacities could represent foci of atelectasis versus aspiration pneumonitis . There is no lobar consolidation .