Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild elevation of the right hemidiaphragm and likely a small right pleural effusion . There is moderate pulmonary vascular congestion which appears mildly increased as compared to the prior study . No definite focal consolidation is seen . There is no evidence of pneumothorax . The cardiac and mediastinal silhouettes are stable . The patient is status post median sternotomy and cardiac valve replacement .
    OUTPUT:
    
Elevated right hemidiaphragm . Small right pleural effusion , appears decreased since the prior study . Moderate pulmonary congestion appears slightly increased .