Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is overall stable compared to the prior exam . There is mild pulmonary vascular congestion with diffuse mild pulmonary edema . Hilar and mediastinal contours are otherwise unremarkable . Small bilateral pleural effusions are persistent . There is no evidence of pneumothorax . The visualized osseous structures are unremarkable . Severe emphysematous changes are also again redemonstrated at the bases of the lungs .
    OUTPUT:
    
Mild to moderate pulmonary edema . Small bilateral pleural effusions .