Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is 3 .5 cm above carina . Right PICC low - lying tip is in the mid to low SVC , overlie spine and is difficult to see . Postoperative changes in the spine . There are bilateral pleural effusions , similar . Improved lung aeration since prior . Improved pulmonary vascularity . Heart is mildly enlarged . Left basilar opacity , mildly worsened , in part from atelectasis given volume loss , consider pneumonia or aspiration if clinically appropriate . Improved right basilar opacity . No pneumothorax .
    OUTPUT:
    
Left basilar opacity has mildly worsened , in part atelectasis , consider aspiration or pneumonia if clinically appropriate .