Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single AP radiograph of the chest was acquired . The patient is rotated to the left . The endotracheal tube ends 4 .2 cm above the level of the carina . There is minimal bilateral lower lung atelectasis . The lungs are otherwise clear . The heart size is top normal . The mediastinal contours are normal . There are no definite pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
1 . Appropriately positioned endotracheal tube , ending 4 .2 cm above the level of the carina . 2 . No acute cardiac or pulmonary process .