Premature newborn after umbilical catheter placement Pediatric Imaging Cardiovascular August 19, 2020August 16, 2020 AXR AP shows the tip of the umbilical venous catheter within the right portal vein. The tip of the umbilical arterial catheter is at T8. The diagnosis was low malposition of the umbilical venous catheter and high malposition of the umbilical arterial catheter. Related Published August 19, 2020August 16, 2020