Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume but clear . The cardiomediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . The visible osseous structures show no definite lucent or sclerotic lesions . The thoracic and lumbar vertebral bodies that are imaged are preserved in height .
    OUTPUT:
    
No acute intrathoracic process .