Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The patient is status post median sternotomy . A left - sided pacemaker has leads terminating in the right atrium , right ventricle and coronary sinus . Moderate cardiomegaly is unchanged . There are atherosclerotic calcifications of the aorta . Mild pulmonary edema is relatively unchanged compared to the prior chest radiograph . There is a small left pleural effusion and bibasilar opacites moreso on the right , suggestive of atelectasis . No pneumothorax is identified . There are degenerative changes in the spine .
    OUTPUT:
    
Mild pulmonary edema has not significantly changed compared to the prior chest radiograph of ___ given differences in technique . Bibasilar opacities , potentially atelectasis noting infection can not be excluded . Small left pleural effusion .