Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . The lungs are hyperinflated but clear of confluent consolidation or effusion . Cardiac silhouette is enlarged . Median sternotomy wires with mediastinal clips and aortic valve prosthesis are again noted . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Hyperinflation without definite acute cardiopulmonary process .