Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has tracheostomy has been repositioned when compared to the prior study . The support lines and tubes are otherwise unchanged in appearance . There has been improved aeration , particular in the right upper lobe . The heart remains enlarged . No definite pleural effusion seen . Left lower lobe atelectasis .
    OUTPUT:
    
Repositioning of the tracheostomy with improved aeration of the right upper lobe . Persistent cardiomegaly .