This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pediatrics
Lisch nodule is seen in? 
Select and explain. 
A. Tuberous sclerosis, B. Sturge-Weber syndrome, C. Neurofibromatosis, D. Wilson disease
C: Neurofibromatosis
Answer: C: Neurofibromatosis 
Explanation: c. Neurofibromatosis(Ref: Nelson's 20/e p 2874, Ghai 8/e p 586)Important clinical features of Neurofibromatosis (NF1) are cafe-au-lait spots, neurofibromas, axillary freckling, Lisch nodules optic glioma and positive family history