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: Medicine
Parinaud syndrome is caused by damage to 
Select and explain. 
A. Anterior commisure, B. Posterior commisure, C. Medial commisure, D. Lateral commisure
B: Posterior commisure
Answer: B: Posterior commisure 
Explanation: Answer- B. Posterior commisureAlso known as dorsal midbrain syndrome, this is a distinct supranuclear veical gaze disorder caused by damage to the posterior commissure.Pineal region tumors, cysticercosis, and stroke also cause Parinaud's syndrome.