MRI at the age of 1 month. Axial T2 weighted and coronal FLAIR images of the brain show dilatation of the vein of the Galen up to 3 cm in diameter without any pathological findings in the brain parenchyma and ventricular system (A, B). 3D TOF images with VR reconstructions demonstrate the feeders coming from the posterior and middle choroidal arteries draining into the large aneurysmal dilatated vein of Galen (C, D, E, F).