Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent pulmonary edema although improved since prior exam . Small left - greater - than - right pleural effusions are identified . The cardiac silhouette is enlarged . Increased soft tissue density with rightward deviation of the trachea at the thoracic inlet is compatible with left - sided thyroid enlargement . Atherosclerotic calcifications noted at the aortic arch . Hypertrophic changes noted in the spine the .
    OUTPUT:
    
Mild pulmonary edema , improved since the exam from 2 weeks prior . Small effusions , left greater than right .