[Graves' disease and hyperprolactinemia in a patient with Noonan syndrome neurofibromatosis type 1].

We report the case of a 42-Year-old woman with Recklinghausen disease (neurofibromatosis type 1) and Noonan syndrome who developed Graves' disease. Hyperthyroidism, which had existed for two Years without treatment, led to the discovery of neurofibromatosis type 1. The diagnosis of Graves' disease was confirmed by blood hormone levels, thyroid gland ultrasound, radioisotope scan and thyroid iodine uptake.