Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate hyperinflated lungs with flattening of the diaphragms , consistent with patient 's history of COPD . Otherwise , the lungs are clear with no focal opacity concerning for pneumonia . The cardiac and mediastinal contours are normal . No pleural effusion or pneumothorax is appreciated . Again seen is symmetric bilateral apical pleural thickening , unchanged .
    OUTPUT:
    
No evidence of pneumonia .