Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained demonstrating midline sternotomy wires . The lungs appear clear bilaterally . Lungs are hyperinflated which could be related to COPD . No focal consolidation , effusion , or pneumothorax is seen . The cardiomediastinal silhouette appears within normal limits . There is an unfolded appearance of the thoracic aorta . Faint atherosclerotic calcifications along the aorta are noted . Osseous structures appear grossly intact . Mild wedging involving mid thoracic vertebral bodies is noted .
    OUTPUT:
    
No acute intrathoracic process .