Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright chest radiograph demonstrates moderate left and small right pleural effusions which are unchanged . The cardiac silhouette remains moderately enlarged , with marked calcification of the mitral valve annulus , and aortic arch . There is splaying of the carina and a double contour to the right heart border consistent with left atrial enlargement . The patient is status post median sternotomy , sternal wires are intact . The pulmonary vasculature is normal .
    OUTPUT:
    
1 . Unchanged bibasilar atelectasis with superimposed moderate left and small right pleural effusion . 2 . Moderate cardiomegaly , unchanged . No pulmonary edema .