Premature newborn after placement of an umbilical venous catheter Pediatric Imaging Cardiovascular August 15, 2020August 15, 2020 AXR AP (above) and cross-table lateral AXR (below) shows the tip of the umbilical venous catheter to be positioned deep within the right portal vein. The tip of the umbilical arterial catheter is at T4. The diagnosis was low malposition of the umbilical venous catheter and high malposition of the umbilical arterial catheter. Related Published August 15, 2020August 15, 2020