A 7 days old neonate presents with recurrent seizures. On examination, tachycardia and S3 gallop are present. Skull examination reveals loud bruit in anterior fontanelle. Blood investigations are Normal. Neurosonogram shows a hypoechoic lesion. What is the diagnosis?
Arachnoid cyst Vein of Galen malformation Dilated ventricles Intraventricular hemorrhage