Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a left - sided central catheter with its tip pointing posteriorly in the azygos vein . Otherwise , there is no significant change . Left lower lobe linear opacity , either atelectasis or scarring , is again seen . Otherwise , the lungs are clear . Top - normal heart size , mediastinum and hilar contours are unchanged . Aortic calcification appear unchanged . Severe thoracic kyphosis and vertebral body endplate changes likely due to renal osteodystrophy appear unchanged .
    OUTPUT:
    
Left - sided central catheter malpositioned in the azygos vein .