Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Slightly lower lung volumes seen on the current exam . That said , the lungs remain clear of consolidation or effusion . Cardiac silhouette is enlarged but stable in configuration given lower inspiratory effort . Osseous and soft tissue structures are unremarkable . Prior median sternotomy is again noted .
    OUTPUT:
    
No acute cardiopulmonary process .