Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates initial placement of the endotracheal tube into the right mainstem bronchus . The endotracheal tube was subsequently repositioned such that the tip ends 2 .2 cm from the carina . There has been interval clearing of the right base , and new obliteration of the left hemi-diaphragm , consistent with pleural effusion and atelectasis . Probably tiny left apical pneumothorax is stable .
    OUTPUT:
    
Endotracheal tube ultimately positioned such that the tip ends 2 .2 cm from the carina .