A child presents with gelastic seizures, precious puberty. MRI shows small pedunculated mass attached to tuber cinerum. What is the diagnosis?
MC cune albright syndrome
Kallman syndrome
Hypothalamic hamartoma
Prader willi syndrome
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.