131Ⅰ治疗甲状腺功能亢进症(简称:“甲亢”)后晚发甲低多为永久性甲低,其随访观察一直受到普遍重视。目前,主要通过有关激素TSH动态监测和随访确诊。早发甲低分为一过性与永久性,二者的治疗、预后不同。我们在动态检查TT3、TT4和TSH基础上,对甲亢131Ⅰ治疗后52例早发临床甲低病人,结合甲状腺 131 Ⅰ treatment of hyperthyroidism (referred to as: “hyperthyroidism”) after a late hypothyroidism for a permanent low, its follow-up observation has been generally valued. At present, mainly through the hormone TSH dynamic monitoring and follow-up diagnosis. Early hypothyroidism is divided into a transient and permanent treatment of the two, the prognosis is different. On the basis of the dynamic examination of TT3, TT4 and TSH, 52 cases of early onset clinical hypothyroidism after 131 I treatment of hyperthyroidism, combined with thyroid