Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Severe enlargement of cardiac silhouette is unchanged . The aorta remains moderately tortuous . Mediastinal and hilar contours are similar with mild chronic pulmonary vascular congestion redemonstrated . Persistent focal patchy opacity within the right lung base is unchanged . No new areas of focal consolidation are demonstrated . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Persistent patchy opacity in the right lung base which again may reflect pneumonia in the correct clinical context . Severe cardiomegaly with chronic mild pulmonary vascular congestion .