Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A ventriculoperitoneal shunt overlies the right hemithorax with the tip out of the field of view . The lung volumes are very low . There is likely some mild bibasilar linear atelectasis . There is no focal airspace consolidation . There is also some mild engorgement of the pulmonary vasculature . There is no overt pulmonary edema , pleural effusion , or pneumothorax . The cardiac size is mildly enlarged .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Mild pulmonary vasculature congestion and cardiomegaly .