Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates in the right mainstem bronchus . An orogastric tube courses into the stomach . Lung volumes are low . Within the limitations of technique there is no definite abnormality involving cardiac , mediastinal or hilar contours . There is pleural effusion or pneumothorax . There is mild leftward shift of mediastinal structures and vague asymmetric opacification of the left lung . Streaky opacities at the right lung base suggest minor atelectasis .
    OUTPUT:
    
Right mainstem bronchus intubation . Asymmetric opacity and mild leftward shift suggesting associated early atelectasis of the left lung . Low lung volumes .