Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . The lungs and pleural spaces are clear without evidence of pneumothorax or pleural effusions . No focal consolidations are seen . There is tortuosity of the thoracic aorta . The heart is normal in size . Visualized bowel gas pattern is nonspecific and osseous structures are grossly intact .
    OUTPUT:
    
No acute intrathoracic process .