Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe cardiomegaly appears slightly increased in size compared to the previous radiograph . The patient is status post median sternotomy and CABG . There is mild pulmonary edema , worse when compared to the previous study , as well as enlargement of the vascular pedicle . Small bilateral pleural effusions are likely present . Patchy bibasilar airspace opacities likely reflect areas of atelectasis . No pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary edema and small bilateral pleural effusions .