期刊
CURRENT OPINION IN ENDOCRINOLOGY DIABETES AND OBESITY
卷 22, 期 5, 页码 407-412出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MED.0000000000000181
关键词
congenital hypothyroidism; eutopic; prematurity; preterm; thyroid
Purpose of reviewThis review summarizes significant recent advances in the epidemiology, pathophysiology, and treatment of congenital hypothyroidism.Recent findingsThe apparent incidence of congenital hypothyroidism has more than doubled in recent years because of several factors, including more inclusive diagnostic criteria, shifting demographics, and increasing survival of preterm infants. The greatest increase has occurred in mildly affected patients, many of whom have a eutopic thyroid gland. Congenital hypothyroidism may be transient or persistent, but the natural history cannot be predicted by severity at diagnosis. In premature infants, who are especially vulnerable to hypothyroidism, the rise in thyroid-stimulating hormone may be delayed and therefore detected only by routine follow-up screening. Recent studies of defects in thyroid hormone synthesis have focused on the role of mutations in the dual oxidase system and of a novel apical iodide transporter, anoctamin 1. Finally, emerging data suggest that exposure to excess thyroid hormone may be as harmful as hypothyroidism to long-term cognitive development.SummaryAlthough newborn screening has virtually eradicated mental retardation due to congenital hypothyroidism in parts of the world, new information continues to accumulate and new questions to arise about the diagnosis, physiology, and optimal management of this disorder.
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