Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest depict the left - sided pigtail pleural drainage catheter in unchanged position . There is a persistent small left - sided pleural effusion which appears to be loculated into two components , anteriorly and posteriorly . The drainage catheter is within the anterior component . The size of the effusion on the left has decreased from the prior study and the right - sided effusion has almost completely resolved . There is no pneumothorax and the lungs are otherwise clear . Severe cardiomegaly and scoliosis is unchanged .
    OUTPUT:
    
1 . Loculated small left pleural effusion has decreased in size , and a drainage catheter is within the anterior component of the effusion . 2 . Right - sided effusion has decreased considerably in size . 3 . Pneumothorax is no longer apparent .