Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mild to moderately enlarged , decreased from the previous study . The mediastinal contours are unchanged . Mild pulmonary edema with perihilar haziness and vascular indistinctness is present , similar compared to the previous exam . There may be small bilateral pleural effusions , though the left costophrenic angle is excluded from the field of view . No large pneumothorax is detected .
    OUTPUT:
    
Mild pulmonary edema , similar compared to the prior exam , with possible small bilateral pleural effusions .