<prompt> CT skull giving tram track appearance is diagnostic of-NeurofibromaTuberous sclerosisVon Hippel Lindau diseaseSturge Weber syndrome  <response>: Ans is d i.e. Sturge Weber syndrome CT scans in Sturge Weber syndrome show the tramline gyriform calcification of apposing gyri that underlies the contrast-enhancing leptomeningeal vascular malformation.Other CT scan findings Sturge Weber syndrome Cortical atrophy Abnormal draining veins Enlarged choroid plexus Blood-brain barrier breakdown during seizures Contrast enhancement 