Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs demonstrate clear lungs without a focal consolidation . Cardiomediastinal and hilar contours are within normal limits . There is no evidence of pulmonary edema , pleural effusion , or pneumothorax . No air under the right hemidiaphragm . Degenerative changes are noted within the thoracic spine , vertebral body of heights appear preserved .
    OUTPUT:
    
No acute intrathoracic abnormality .