Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal supine view of the chest was obtained portably . The endotracheal tube ends 3 .5 cm above the carina . There is no large focal consolidation , pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes and hilar contours are within normal limits . No displaced rib fracture is seen . Biapical bullus emphysema is confirmed on the subsequent CT .
    OUTPUT:
    
1 . No radiographic evidence of acute intrathoracic injury . The chest is better assessed on subsequent CT . 2 . Endotracheal tube ends 3 .5 cm above the carina .