Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . A dual - chamber pacer is noted . There is probably mild background hyperinflation . The diaphragms are flattened with mild eventration on the right . Mild cardiomegaly , with calcified aortic knob , is stable . No CHF , focal consolidation , or gross effusion is identified . Minimal atelectasis at the left base is unchanged . There is slight blunting of one or both costophrenic angles posteriorly . Prominence of the right hilum is noted on the AP view , but not confirmed on the lateral view . Subtle findings visible on the ___ chest CT are not apparent radiographically . The previously described hiatal hernia is also not well visualized on this exam . Note is made of compression deformities in the mid and lower thoracic spine , which appear unchanged since ___ .
    OUTPUT:
    
1 ) Stable cardiomegaly and stable left base atelectasis / scarring . Probable background COPD . 2 ) No acute pulmonary process identified . 3 ) Hiatal hernia and chronic compression fractures . 4 ) Findings seen on ___ chest CT not well visualized radiographically . Also , equivocal prominence right hilum . Please see comment above .