Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly lower and pulmonary edema is slightly worse than on ___ . Substantial cardiomegaly , postoperative mediastinum , and right internal jugular vascular sheath are stable . Opacities obscure the bilateral costophrenic angles , increased since ___ . No pneumothorax .
    OUTPUT:
    
Slightly increased pulmonary edema and bilateral pleural effusions since ___ . No pneumothorax .