Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe S - shaped thoracolumbar scoliosis is redemonstrated with an unchanged appearance of the cardiomediastinal silhouette . The aortic knob appears calcified . Eventration of left hemidiaphragm is again noted . There are minimal atelectatic changes in the lung bases . There is blunting of the costophrenic angles , compatible with small effusions . There is no pneumothorax . No pulmonary vascular congestion is seen . There is diffuse demineralization of the osseous structures .
    OUTPUT:
    
Minimal bibasilar atelectasis with tiny bilateral pleural effusions .