Usefulness of the Guglielmi detachable coil for embolization of a systemic venous collateral after Fontan operation: A case report

Figure 1 Diagram of the Fontan circulation. Arrows indicate the direction of blood flow. SVC: Superior vena cava; PA: Pulmonary artery; PV: Pulmonary vein.

Figure 2 Angiography. A, B: Before coil embolization, an abnormal venous collateral is seen originating from the left phrenic vein and draining into the left pulmonary vein, forming a right-to-left shunt; C: After coil embolization of the collateral with Guglielmi detachable coils (arrow), the pulmonary vein is no longer opacified.