Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates very low lung volumes . The cardiac silhouette is enlarged , and likely exaggerated due to technique . A right - sided PICC line is noted , terminating in the distal right brachiocephalic vein . Again noted is a ventriculoperitoneal shunt . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Unchanged position of right - sided PICC , terminating in the distal right brachiocephalic vein .