Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is slight coarsening of the central airways , which may reflect an inflammatory process , but no focal consolidation is present . There is no pleural effusion or pneumothorax . The heart is normal in size . Mild - to - moderate degenerative changes along the mid - to - lower thoracic spine , including a slight wedging of a mid - to - lower thoracic vertebral body are similar .
    OUTPUT:
    
No definite evidence for acute disease , although mild coarsening of central lung markings may reflect an inflammatory process involving the lower airways .