Abruption, Vasa Previa, Placenta Previa Submit your image Additional Links: Vascular Anastomosis in Twin-Twin Transfusion Syndrome Nuchal Cord Velamentous Insertion of the Umbilical Cord True Knot of the Umbilical Cord Another True Umbilical Cord Knot Umbilical Cord Pseudoknot Torsion of Umbilical Cord Torsion of Umbilical Cord with Fetal Demise Placenta Previa Placenta Increta Accessory Lobe of Placenta Circumvallate Placenta Placental Infarct Meconium Staining of Placenta