Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . The lungs are hyperinflated , though clear bilaterally . The heart is within normal limits of size . Mediastinal contour is normal . No pleural effusion or pneumothorax . Eventration / diaphragmatic hernia is noted at the medial right lung base on the frontal projection . Tracheobronchial tree calcification is noted . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process . COPD again noted .