Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine AP radiograph of the chest shows low lung volumes and mild to moderate bilateral pleural effusions , left greater than right , with adjacent atelectasis . Underlying infection can not be completely excluded . Median sternotomy wires and Corevalve are in place . The aorta is tortuous and calcified . The pulmonary vessels are prominent and ill defined with hazy opacities bilaterally , compatible with pulmonary edema . Emphysematous changes are redemonstrated with scattered rounded lucencies throughout both upper lungs . There is no pneumothorax . The osseous structures are grossly unremarkable .
    OUTPUT:
    
Mild to moderate bilateral pleural effusions , left greater than right , and moderate pulmonary edema . Bibasilar airspace opacities may reflect atelectasis but infection is not excluded .