Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD device is noted with leads in unchanged positions within the right ventricle . Right PICC tip remains in the mid SVC . The patient is status post median sternotomy and CABG . Cardiac silhouette size remains borderline enlarged . The mediastinal contours are similar . There is likely minimal pulmonary vascular congestion . Partially loculated moderate size left pleural effusion is re - demonstrated with a trace right pleural effusion also similar in size . Increased opacity within the left lung base may reflect atelectasis though infection is not excluded . No pneumothorax is present . Left apical thickening remains unchanged .
    OUTPUT:
    
Moderate size partially loculated left pleural effusion and trace right pleural effusion , unchanged . Worsening opacification in the left lung base , potentially atelectasis though infection is not excluded .