Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The thoracic aorta is tortuous . Otherwise , the cardiomediastinal silhouettes are within normal limits . The bilateral hila are unremarkable . There are low lung volumes . There may be mild atelectasis at the lung bases . There is no focal lung consolidation . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion . A hiatus hernia is noted .
    OUTPUT:
    
No acute cardiopulmonary process . Hiatus hernia .