Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided dialysis catheter enters the right atrium . A left pectoral AICD remains in place with lead placement reflecting variant anatomy , including a persistent left SVC . The layering left pleural effusion has decreased , and is now small . Small right pleural effusion is unchanged . There is no pneumothorax . Unchanged retrocardiac opacification is due to unchanged left lower lobe collapse . The right lung remains clear .
    OUTPUT:
    
Interval decrease in left pleural effusion , which is now small . Unchanged small right pleural effusion . No pneumothorax . Unchanged left lower lobe collapse .