Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Dialysis catheter through a right subclavian approach is unchanged in position terminating at the cavoatrial junction . Cardiomediastinal silhouette is notable for borderline cardiomegaly . Mild scarring is present in the lingula . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Right subclavian dialysis catheter terminates at the cavoatrial junction .