Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of a left - sided PICC line ends in the lower SVC . An airspace opacity at the medial right lung base has increased since ___ . Stable retrocardiac opacification may be due to atelectasis or aspiration . The layering left pleural effusion has increased , but the small right pleural effusion is unchanged .
    OUTPUT:
    
Increased medial right lung base airspace opacity may be due to aspiration or developing infectious pneumonia . Stable left basilar atelectasis or aspiration . Increased moderate layering left pleural effusion . Stable small right pleural effusion .