Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Findings there has been right mainstem intubation . By the time of dictating this report the ET tube had already been repositioned . The feeding tube is off the film , at least in the stomach . There is dense retrocardiac opacity there is right lower lobe volume loss there small bilateral effusions
    OUTPUT:
    
Right mainstem bronchus intubation