Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits . Thoracic aorta is mildly tortuous . Lungs are clear . There is no pleural effusion or pneumothorax . The upper abdomen is grossly unremarkable . There is no evidence of free air under the hemidiaphragm . There is mild scoliosis .
    OUTPUT:
    
No acute intrathoracic process or evidence of free air under the diaphragm .