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Hypothalamic hamartoma: report of two cases.

Two histologically confirmed hypothalamic hamartomas, one in a 7-year-old boy and another in a 10-year-old boy, are reported. One patient had precocious puberty, epileptic laughter, and abnormal behavior; the other had cerebral seizures. Partial removal of the tumors had no effect on precocious puberty; however, behavior improved in the first patient, and seizure control improved in the second patient.