Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small left pleural effusion and probable trace right pleural effusion . Possible trace right pleural effusion is noted . Increased interstitial markings are seen bilaterally , particularly at the bases . This could be in part due to atelectasis given effusions although chronic interstitial process or potentially aspiration is possible . There is moderate cardiomegaly . Atherosclerotic calcifications are seen at the aortic arch . Median sternotomy wires are intact . No acute osseous abnormalities .
    OUTPUT:
    
Bilateral pleural effusions , left greater than right . Increased interstitial markings at the bases potentially atelectasis noting that infection or aspiration would be difficult to exclude .