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': 'Porencephaly refers to – \nSelect and explain. \nA. Foetal alcohal syndrome, B. Dandy-walker-syndrome, C. Vascular lesion due to degenerative vessel disease and head injury, D. Neural tube defects', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Porencephaly Refers to the presence of cysts or cavities within the brain, that may results from\n\nDevelopniental defects (True porencephalic cysts).\nAcquired lesions of infarction of tissues.\xa0\xa0\xa0\xa0\xa0\xa0\xa0 (i.e. Vascular lesions) - AV malformation or infarcts or (Pseudo-porencephalic cysts).\n\nDefects of NeuronalMigration : malformations of cortical development\nLissencephaly\xa0 \xa0 \xa0 \xa0 -\xa0 \xa0 \xa0 \xa0 \xa0\xa0Also called agyria\nCharacterized by absence of cerebral convolutions and poorly formed sylvian fissure giving the appearance of 3-4 months fetal brain.\nSchizencephaly\xa0 \xa0 \xa0 \xa0-\xa0 \xa0 \xa0 \xa0\xa0Presence of unilateral or bilateral clefts within the cerebral hemisphere due to an Abnormality of morphogenesis\nPorencephaly\xa0 \xa0 \xa0 \xa0 -\xa0 \xa0 \xa0 \xa0 \xa0\xa0Presence of cysts cavities within the brain that result from developmental defects or acquired lesions including infarction of tissue.\nHoloprosencephaly\xa0 \xa0-\xa0 \xa0 \xa0Developmental disorder of brain that results from defective cleavage of prosencephalon.', 'role': 'assistant'}]