Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded petechial in the upper zones . There are coarse interstitial markings in the right lower lung more so than the left likely reflecting component of chronic lung disease . Heart is mildly enlarged . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Hyperexpanded lungs with coarsened markings at the lung bases , right greater than left , likely reflecting COPD and chronic lung disease . No definite evidence of pneumonia .