Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is slightly rotated . Patient is status post median sternotomy and CABG . Mild cardiomegaly is present . Main pulmonary artery contour appears enlarged . There is mild pulmonary edema with vascular indistinctness . Patchy atelectasis is seen in the lung bases without focal consolidation . No large pleural effusion or pneumothorax is present . No acute osseous abnormalities are evident .
    OUTPUT:
    
Mild pulmonary edema . Patchy bibasilar opacities , likely atelectasis . No definite focal consolidation to suggest pneumonia .