Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated with flattening of the diaphragms and widening of the AP dimension of the chest consistent with COPD . A suprahilar opacity on the left is longstanding , unchanged from radiograph of ___ . Lungs are otherwise clear without focal opacities , effusion or pneumothorax . There is no evidence of pulmonary vascular congestion . The cardiomediastinal silhouette is normal . There is calcification of the thoracic aorta . The bony structures are grossly intact .
    OUTPUT:
    
No acute intrathoracic process .