Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small to moderate left and probable small right effusion . There is additional retrocardiac opacity laterally potentially atelectasis noting that infection can not be excluded . Prominent interstitial markings seen throughout . Cardiac silhouette is enlarged , similar compared to prior . Atherosclerotic calcifications noted at the aortic arch . Dense mitral annular calcifications are also noted .
    OUTPUT:
    
Bilateral left greater than right effusions . Retrocardiac opacity seen laterally could be atelectasis noting infection can not be excluded . Pulmonary vascular congestion .