Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient positioning is suboptimal . There are low lung volumes . Bilateral opacities , right greater than left , and indistinct pulmonary vasculature is compatible with mild to moderate pulmonary edema . There are small pleural effusions , left greater than right . Bibasilar atelectasis is worse on the left with obscuration of the left hemidiaphragm , likely a combination of pleural effusion and atelectasis . The cardiomediastinal silhouette and hilar contours are stable . There is prior median sternotomy with partially visualized intact wires . There is no large pneumothorax .
    OUTPUT:
    
1 . Moderate pulmonary edema . 2 . Small bilateral pleural effusion . Bibasilar atelectasis worse on the left ; underlying infection can not be excluded .