Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . There is mild cardiomegaly which is unchanged . The mediastinal and hilar contours are relatively stable with tortuosity of the thoracic aorta again noted . There is mild diffuse calcification of the thoracic aorta . Mild pulmonary vascular congestion is slightly increased when compared to the prior study . No focal consolidation , pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities . Degenerative spurring is seen within the left acromioclavicular joint as well as within the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular congestion , slightly worse in the interval .