Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low accentuating the cardiac silhouette and pulmonary vasculature . Endotracheal tube terminates 3 cm cranial to the carina . Heart size is normal . Cardiomediastinal silhouette and hilar contours are unremarkable . Bibasilar atelectasis is not worse on the left than the right . Pleural surfaces are clear without large effusion or pneumothorax .
    OUTPUT:
    
Appropriate positioning of the endotracheal tube .