This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neurocutaneous syndromes, Subject name: Pediatrics
"Rail Road pattern" in Neuroimaging is seen in :- 
Select and explain. 
A. Tuberous sclerosis, B. Sturge weber syndrome, C. Ataxia Telengiectasia, D. Neurofibromatosis
B: Sturge weber syndrome
Answer: B: Sturge weber syndrome 
Explanation: Powine stain is in the distribution of the first branch of the trigeminal nerve is a/w ipsilateral rail road pattern (also known as tram track pattern) of intracranial calcification and glaucoma. -presentation is with contralateral hemiparesis , focal seizures and/or intellectual disability features of Sturge:- weber syndrome includes (a) intracranial calcifications in left hemisphere on CT. ; and (b)Hemi-facial angioma or po wine stain