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': 'Commonest cause of non-communicating hydrocephalus in children is - \nSelect and explain. \nA. Congenital anomaly, B. Perinatal injury, C. Post-inflammatory obstruction, D. Brain tumors', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Congenital anomaly Hydrocephalus o Hydrocephalus is characterized by an increased volume of CSF in association with progressive ventricular dilatation. o Hydrocephalus resulting from obstruction within the ventricular system is called obstructive or noncommunicating hydrocephalus. o Hydrocephalus resulting from obliteration of subarachnoid cisterns or malfunction of the arachnoid villi is called nonobstructive or communicating hydrocephalus.", 'role': 'assistant'}]