Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral images of the chest demonstrate clear lungs bilaterally . Mediastinal and hilar contours are within normal limits . Heart size is normal . There is no pleural effusion or pneumothorax . Degenerative changes noted within the thoracolumbar spine . Degenerative changes at the right acromioclavicular joint are noted . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute intrathoracic abnormality .