Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are extremely low resulting in crowding of the bronchovascular markings . Within this limitation , no definite consolidation is seen . No pleural effusion or pneumothorax is detected . Left lower lobe opacity , likely represent atelectasis . The heart is mildly enlarged . The hilar and mediastinal contours are stable with minimal calcification in the aortic arch . Again seen is severe kyphosis of the thoracic spine , with a rugger ___ spine appearance , indicating renal osteodystrophy .
    OUTPUT:
    
No acute cardiopulmonary pathology in this limited study .