Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP supine view of the chest was obtained . Trauma board partially obscures the view . The lungs are well expanded and clear . The heart is normal in size and cardiomediastinal contour is unremarkable . There is no pleural effusion and no pneumothorax . The ET tube projects 6 cm above the carina . NG tube is in the stomach .
    OUTPUT:
    
1 . No acute intrathoracic abnormality . 2 . ET tube is slightly high in position , consider advancing by 2 cm for optimal placement . 3 . Chest radiography is not adequate for evaluation of traumatic injury to the chest cage .