Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . No focal consolidation is seen . The cardiac silhouette is stably enlarged . Mild pulmonary vascular congestion is minimally worse Mediastinal contours unchanged . There is no pleural effusion or pneumothorax . There are median sternotomy wires and transvenous pacing leads ending in the right atrium and right ventricle
    OUTPUT:
    
No evidence of pneumonia . Borderline cardiac compensation .