Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Moderate cardiomegaly persists . The mediastinal contours are unchanged . There is mild upper zone vascular redistribution and pulmonary vascular congestion , similar when compared to the previous exam . No pleural effusion , focal consolidation or pneumothorax is demonstrated . Multilevel degenerative changes are noted in the thoracic spine with anterior osteophytes . Several clips are also noted within the upper abdomen .
    OUTPUT:
    
Mild pulmonary vascular congestion .