Fig. 1

a Echocardiography modified bicaval view showing dilated right superior vena cava (RSVC) draining into dilated the dilated left atrium (LA). Inferior vena cava (IVC) is draining normally to the right atrium (RA). b Selective Angiography with multiple supplying vessels of a large arteriovenous malformation deeply located in the left basal ganglia with drainage into MProsV of Markowski that drains into the vein of Galen. c Moderate hydrocephalus is present. The maximum size of the arteriovenous malformation is approximately 4.9 cm in size. The Arterial supply from middle cerebral artery and anterior cerebral artery small branches. The venous drainage through MProsV of Markowski that drains into the vein of Galen with significant dilatation of the torcula and the transverse sinuses. d MR angiography and MR venogram: Complete obliteration of the arteriovenous malformation and the arteriovenous shunting. No further embolization is needed