Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear , without focal consolidation or pulmonary edema . No pleural effusion or pneumothorax . The heart size is normal . Mediastinal contours , hila , and pleura are unremarkable . Mild degenerative changes in the visualized thoracic spine , with endplate sclerosis and narrowing of the intervertebral disc space .
    OUTPUT:
    
No acute cardiopulmonary process .