Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are relatively hyperinflated , flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . There is slight increase of interstitial markings bilaterally which maybe related to COPD / chronic changes . There is patchy opacity at the right lung base which could be due to aspiration , contusion , or infection . Right middle lobe linear opacity likely represents atelectasis . No large pleural effusion or pneumothorax . Biapical right greater than left pleural thickening is seen . The cardiac silhouette is mildly enlarged . Mediastinum is unremarkable .
    OUTPUT:
    
1 . COPD . 2 . Patchy right base opacity may be due to aspiration , infection , or contusion depending on the clinical scenario . Right middle lobe likely atelectasis . 3 . Large hiatal hernia .