Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable view of the chest was obtained . The right costophrenic angle is not fully included . The patient is status post median sternotomy , CABG , and cardiac valve replacement . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
No acute cardiopulmonary process .