Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . There has been no significant interval change . The lungs are hyperinflated but clear of focal consolidation or pulmonary vascular congestion . There is mild blunting of the left lateral costophrenic angle , which could be due to scarring . Posterior costophrenic angles are clear . Cardiac silhouette is enlarged but unchanged . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Hyperinflation , but no acute cardiopulmonary process .