This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
Most common type of optic nerve glioma is 
Select and explain. 
A. Protoplasmic, B. Pilocytic, C. Gemistocytic, D. Fibrous
B: Pilocytic
Answer: B: Pilocytic 
Explanation: Pilocytic means that the tumor cells are hair like. pilocytic astrocytoma is the most common type Refer khurana 6/e 410