Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , bilateral pleural effusions , moderate on the right and small on the left , are increased , mild pulmonary edema is unchanged , right hilar opacity is unchanged , and left retrocardiac opacities are not clearly seen on today 's exam . Lung volumes are low . The heart size is normal . No pneumothorax . Mild tracheal deviation may be due to enlarged thyroid or vascular tortuosity .
    OUTPUT:
    
1 . Since ___ , bilateral pleural effusions , moderate on the right and small on the left , are increased , mild pulmonary edema and right hilar opacity is unchanged , and left retrocardiac opacities are not clearly seen . 2 . Mild tracheal deviation may be due to enlarged thyroid or vascular tortuosity . Please correlate with physical exam .