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  • Title: Results of the screening program for congenital hypothyroidism in Berlin (1978-1995).
    Author: Grüters A, Liesenkötter KP, Zapico M, Jenner A, Dütting C, Pfeiffer E, Lehmkuhl U.
    Journal: Exp Clin Endocrinol Diabetes; 1997; 105 Suppl 4():28-31. PubMed ID: 9439911.
    Abstract:
    Screening for congenital hypothyroidism for all newborns of the former western parts of the city of Berlin was instituted in 1978 by determination of the TSH levels in dried filter paper blood spots of the 3rd to 5th day of life. Since 1991 the newborns of the former eastern parts have been also included in the same screening program. From 1978 to 1995 a total number of 104 newborns with permanent congenital hypothyroidism have been detected resulting in a prevalence of congenital hypothyroidism of 1:3800. The etiological diagnosis of hypothyroidism was made by imaging studies (ultrasonography or 99mTc scintigraphy) and assessment of serum thyroglobulin and thyroid hormone levels. Using this approach in 37 children (30 female, 7 male) the diagnosis of athyrosis, in 20 children (15 female, 5 male) the diagnosis of ectopy and in 21 children (18 female, 3 male) the diagnosis of thyroid hypoplasia was made, 16 children (8 female, 8 male) had a normally sized gland and 4 (1 female, 3 male) had congenital goiter. In 86% of all patients the age at onset of thyroxine (L-T4) replacement therapy was 8 or 9 days of life (3-42 days) and the median initial L-T4 dose was 14 micrograms/kg/day (10-16 micrograms/kg/day). The intellectual outcome of 77 children (2-16 years) was studied and normal scores for the intelligence (IQ) and developmental (DQ) quotients were found in 71 (92%). Outcome was not correlated to the age at onset of treatment, the initial dose and the severity of hypothyroidism, but there was a positive correlation of the socioeconomic status of the family and the IQ of the patients. The results of the screening program in Berlin document that an early and efficient thyroxine replacement can normalize the intellectual outcome of patients with congenital hypothyroidism independent of the severity of the disease as assessed by the residual thyroid function detectable at diagnosis.
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