Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A gastric tube extends into the body of the stomach . A partially evaluated VP shunt courses along the left hemithorax and hemi abdomen . Low bilateral lung volumes . Persistent atelectasis in the left lower lung zone . No pleural effusion or pneumothorax identified . The size of the cardiac silhouette is enlarged but unchanged
    OUTPUT:
    
No significant interval change since the prior examination .