Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unchanged . Mid thoracic spine compression deformities are stable . The lungs are clear except for unchanged linear atelectasis or scarring at the right lung base . . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary process .