This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Tumours arising from all of thefollowing structures can induce papilloedema except: 
Select and explain. 
A. Medulla oblongata, B. Cerebrum, C. Olfactory groove, D. Orbital surface of frontal lobe
A: Medulla oblongata
Answer: A: Medulla oblongata 
Explanation: Ans. Medulla oblongata