Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are intact . The heart is mildly enlarged . The aorta is tortuous . There is mild pulmonary vascular congestion . There is no focal consolidation to suggest pneumonia . Linear opacity at the right lung base is most consistent with atelectasis . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No radiographic evidence of pneumonia . 2 . Linear opacity at the right lung base most consistent with atelectasis . 3 . Mild vascular congestion .