Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is unchanged , and appears mildly enlarged . Mediastinal and hilar contours are stable , and there is no evidence of pulmonary edema . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes of the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .