<prompt> Which among the following is not seen in Sturge Weber syndrome?Mental retardationSeizureRail road track appearanceNone  <response>: The Sturge-Weber syndrome SWS, also called encephalotrigeminal angiomatosis, is a neurocutaneous disorder with angiomas involving the leptomeninges leptomeningeal angiomas and skin of the face, typically in the ophthalmic V1 and maxillary V2 distributions of the trigeminal nerve. The cutaneous angioma is called a po-wine stain PWS. The neurologic manifestations include seizures, focal deficits, such as hemiparesis and hemianopsia, called stroke like episodes; headaches; and developmental disorders, including developmental delay, learning disorders, and mental retardation. The skull radiograph may show the classical tram-line, or tram-track or trolley-track, calcifications considered pathognomonic for SWS. 