Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior study , bilateral pigtail pleural catheters have been removed . There is moderate pulmonary interstitial edema , increased compared to prior examination . Increased opacification at the left lower lung may represent asymmetric edema however superimposed consolidation can not be excluded . There is a small right pleural effusion . Mediastinal silhouette is stable .
    OUTPUT:
    
Moderate pulmonary edema and small left pleural effusion . Superimposed consolidation can not be excluded at the left lung base .