Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The patient is status post median sternotomy and CABG . There are low lung volumes , which accentuate the bronchovascular markings , given this , there is subtle patchy right mid - to - lower lung opacity which could be due to pneumonia . Bibasilar atelectasis is again seen . There is prominence of the central pulmonary vasculature which may be due to vascular engorgement / mild pulmonary vascular congestion . No pleural effusion is seen . There is no evidence of pneumothorax . The cardiac silhouette is mildly enlarged . Mediastinal contours are stable with calcification of the aortic knob .
    OUTPUT:
    
Low lung volumes which accentuate the bronchovascular markings with mild pulmonary vascular congestion . More focal patchy opacity in the right mid-to - lower lung could be due to consolidation from infection or aspiration .