Congenital Defects Associated with Congenital Hypothyroidism
Congenital hypothyroidism (CH) has an incidence of about 1 in 4000 live births.l The aetiology of the condition is poorly understood although it is recognised that athyreosis occurs in approximately 30% of infants and various degrees of ectopia of the thyroid gland in the remaining cases.2 In 1986 we reported that 20% of a group of CH infants identified in one screening programme had congenital malformation in addition to CH.3 In view of this finding and a confirmatory report from one centre in the USA4 we have attempted to establish the possible relationship between CH and congenital defects worldwide.
KeywordsCongenital Malformation Spina Bifida Marfan Syndrome Congenital Hypothyroidism Urinary Iodine
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