Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from ___ , there has been interval placement of a left pleural drainage catheter at the left lung base . No pneumothorax . Left pleural effusion has moderately decreased in size . Right pleural effusion is minimally improved . There is no new focal consolidation , pulmonary vascular congestion or pulmonary edema . Mediastinal and cardiac contours are stable .
    OUTPUT:
    
Moderately improved left pleural effusion with left pleural catheter in proper position . No pneumothorax .