Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable view of the chest . Mediastinal clips and sternotomy wires are stable . There is a stable mechanical aortic valve . The cardiomediastinal and hilar contours are normal . There is no focal consolidation , pleural effusion or pneumothorax . There is mild pulmonary vascular congestion . Lucency along right mediastinal border , in absence of symptoms most likely represents air in the esophagus .
    OUTPUT:
    
Mild pulmonary vascular congestion . Lucency along right mediastinal border , in absence of symptoms most likely represents air in the esophagus .