Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size , mediastinal , and hilar contours are normal . The lungs are clear without pleural effusion , focal consolidation , or pneumothorax . Multilevel degenerative changes of the thoracic spine are present .
    OUTPUT:
    
No acute cardiopulmonary process . Specifically , no evidence of cardiomegaly .