Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear the heart and mediastinal structures are unremarkable in appearance . There is severe narrowing of the lower lumbar intervertebral disc which is surrounded by small to moderate - sized marginal osteophytes . There is no significant interval change .
    OUTPUT:
    
No active cardiopulmonary disease . Degenerative changes in the lower thoracic spine .