This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CNS Tumors, Subject name: Surgery
What is/are not a feature(s) of the Encephalotrigeminal syndrome: 
Select and explain. 
A. Rail track appearance on CT scan, B. Hemiatrophy of the brain, C. Convulsion, D. Empty sella
D: Empty sella
Answer: D: Empty sella 
Explanation: Sturge - Weber Syndrome / Encephalotrigeminal Syndrome - Large unilateral cutaneous angioma (po - wine stain) - Focal seizures typically occurs opposite to the side of lesion - Cerebral angiomas lead to coical atrophy - Angiomas are visible radiologically as tram - track or rail track calcification mainly in occipital region