Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right internal jugular central venous catheter and right PICC line ends in the low SVC . The lung volumes remain low . There is improved aeration of the right lung base from ___ with residual atelectasis . Retrocardiac and left basilar opacification is unchanged . There is no large pleural effusion or pneumothorax . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Improved aeration of the right lung base with residual atelectasis .