Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the chest radiograph from earlier the same day , left - sided pigtail catheter has been removed . A new left pleural catheter has been inserted , the tip not well seen . Interval decrease in the left pleural effusion which is now moderate . Improved atelectasis in the left lung . Mild interstitial pulmonary edema persists . Mild cardiomegaly .
    OUTPUT:
    
Interval decrease in the left - sided pleural effusion which is now moderate . A new left pleural catheter has been inserted , the tip not well seen .