Prenatal and Postnatal Sonographic Confirmation of Congenital Absence of the Ductus Venosus in a Child with Noonan Syndrome
Anterior-posterior portable radiographs (a) and cross-table lateral radiograph (b) demonstrating the abnormal course of the umbilical catheter. The anterior-posterior view illustrates the caudal loop (solid arrow) as well as the superior ascent of the umbilical catheter to the right atrium (dashed arrow). The inset image of a subsequent anterior-posterior image reveals the close proximity of the umbilical catheter (solid arrow) and the peripherally inserted central venous catheter placed (dashed arrow) in the arm. The lateral radiograph reveals the position of the umbilical catheter (solid arrow) anterior to the expected position of the aorta.