Sporadic Congenital Hyperthyroidism due to a Spontaneous Germline Mutation in the Thyrotropin Receptor Gene*

Abstract excerpt

Neonatal hyperthyroidism in the absence of maternal autoimmune thyroid disease and without thyroid-stimulating antibodies in the child is rare. We here describe a boy with severe intrauterine hyperthyroidism and advanced bone age in the absence of thyroid-stimulating autoantibodies. After long term antithyroid treatment and relapse of hyperthyroidism, a near-total thyroid resection was performed. The necessity to...

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