Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Mild cardiomegaly is re - demonstrated . The mediastinal and hilar contours are unremarkable except for atherosclerotic calcifications at the aortic knob . The pulmonary vasculature is not engorged . There is minimal atelectasis in the left lung base without focal consolidation . Minimal blunting of the right costophrenic angle may suggest the presence of a trace pleural effusion . No pneumothorax is detected . There are moderate degenerative changes seen in the thoracic spine . Clips are noted in the right upper quadrant of the abdomen .
    OUTPUT:
    
Small right pleural effusion and minimal left basilar atelectasis . No focal consolidation to suggest pneumonia .