You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A child presents with gelastic seizures, precious puberty. MRI shows small pedunculated mass attached to tuber cinerum. What is the diagnosis? and explain in detail?
Hypothalamic hamartoma :

Most common brain lesion causing central precocious puberty.
Consists of ectopically located neural tissue.
May be associated with gelastic seizures (laughing spells).
MRI - small pedunculated mass attached to cinerum or floor of 3rd ventiricle.