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': 'A child presents with gelastic seizures, precious puberty. MRI shows small pedunculated mass attached to tuber cinerum. What is the diagnosis? \nSelect and explain. \nA. MC cune albright syndrome, B. Kallman syndrome, C. Hypothalamic hamartoma, D. Prader willi syndrome', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hypothalamic hamartoma\xa0:\n\nMost common brain lesion causing central precocious puberty.\nConsists of ectopically located neural\xa0tissue.\nMay be associated with gelastic seizures (laughing spells).\nMRI - small pedunculated mass attached to cinerum or floor of 3rd ventiricle.', 'role': 'assistant'}]