Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mild aortic tortuosity is unchanged . Hilar contours are stable . Degenerative change in the thoracic spine with anterior wedging of a mid thoracic vertebral body is unchanged .
    OUTPUT:
    
No pneumonia , edema or pleural effusion .