Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior exam , there is a marked increase in hazy bilateral opacities extending from the perihilar area , compatible with diffuse pulmonary edema . There is retraction of the major fissure on the right upward compatible with some volume loss in the right upper lobe . No pleural effusions are noted . The heart size is mildly enlarged . The patient is status post median sternotomy as well as CABG and pacemaker - type device with leads terminating in the appropriate positions .
    OUTPUT:
    
Marked pulmonary edema .