Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are stable and within normal limits . The bilateral hila are unremarkable . The lungs are clear . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion . Mild multilevel thoracic spine degenerative change is stable in appearance . Mild height loss of the anterior aspect of a mid thoracic spine vertebral body is unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .