Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased anteroposterior diameter of the chest with hyperinflated lungs is consistent with COPD . Bibasilar atelectasis is noted . The lungs are otherwise clear without pneumothorax , pleural effusion or focal consolidation . The pulmonary vasculature is not engorged . The cardiac silhouette is top normal in size . The mediastinal and hilar contours are unchanged . The aortic knob is partially calcified .
    OUTPUT:
    
No acute cardiopulmonary pathology .