Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are clear of confluent consolidation . There is however a rounded opacity projecting over the right 2nd rib anteriorly , not seen on prior . There are small bilateral pleural effusions . Increased pulmonary vascular markings suggest mild interstitial edema , however , this is improved since prior . The cardiac silhouette is moderately enlarged , similar to prior . Atherosclerotic calcifications again noted at the aortic arch . No acute osseous abnormality is identified .
    OUTPUT:
    
Mild interstitial edema and persistent bilateral effusions . Rounded opacity projecting over the right lung apex , potentially summation of shadows however nonurgent repeat PA suggested when patient is amenable to exclude underlying parenchymal lesion .