Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided internal jugular catheter in the low SVC . No pneumothorax . Left retrocardiac opacity and moderate effusion have slightly increased . Right basal opacity is also slightly increased , likely increasing effusion . No interstitial edema . No pneumothorax .
    OUTPUT:
    
Slight increase in small right and small to moderate left pleural effusion .