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: Pediatrics
[{'content': 'Which of the following is not a neuronal migration disorder \nSelect and explain. \nA. Anencephaly, B. Lissencephaly, C. Schizencephaly, D. Porencephaly', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Neuronal migration disorders\n\nLissencephaly\xa0⇒ Image 1\n\tIt has reduction in the number of gyri\nSchizencephaly\xa0⇒ Image 2\n\tUnilateral or bilateral clefts in brain\n\xa0Porencephaly\xa0⇒ Image 3\n\tPresence of cysts within brain.\n\nAnencephaly is not a neuronal migration disorder.', 'role': 'assistant'}]