<prompt> A 7-days-old neonate present with recurrent seizures. On examination, tachycardia and S3 gallop, bruit in anterior fontanelle. Blood investigations are normal. Neurosonogram shows a hypoechoic lesion. What is the diagnosis?Arachoid cystVein of Galen malformationDilated ventriclesIntraventricular hemorrhage  <response>: b. Vein of Galen malformationRef: Nelsons 20e p 1193Newborn presenting with features of heart failure and cranial bruit with a hypoechoic lesion seen on cranial ultrasound suggests Vein of Galen malformationVein of Galen malformation is an arteriovenous connection between primitive choroidal vessels median prosencephalic vein of Markowski, that develops between 6th 11th weeks of gestation, after development of circle of Willis. 