Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine frontal chest radiograph . An endotracheal tube terminates at the right mainstem orifice . An enteric tube terminates within the stomach . The lung volumes are low , resulting in crowding of bronchovascular structures . There is no pleural effusion , pneumothorax or focal airspace consolidation . The heart size is normal . The mediastinum and hilar structures are unremarkable .
    OUTPUT:
    
Endotracheal tube within the right mainstem bronchus . Repositioning is recommended . These findings were discussed with Dr . ___ by Dr . ___ at 11 : 20 on ___ by telephone immediately at the time of discovery .