Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . The lungs are clear . No focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The heart is normal in size . The mediastinum and hila are within normal limits . The pleura are unremarkable . Mild degenerative changes are noted in the visualized thoracic spine .
    OUTPUT:
    
No acute intrathoracic process .