Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well - expanded lungs which are clear . There is some hyperinflation noted . There is no pneumothorax or pleural effusion . Cardiomediastinal silhouette is unremarkable . There is no evidence of acute pulmonary or cardiac process on this exam .
    OUTPUT:
    
Hyperinflation consistent with history of COPD , otherwise normal chest radiograph .