title: [Infantile and juvenile hypothyroidism with the gland in place and low radio-iodide uptake].
abstract: 27 hypothyroid infants of children, with a low iodine uptake in spite of a thyroid gland or thyroid tissue in normal pretracheal place, have been studied. 21 cases are related to primary thyroid involvement leading to vanishing iodine or technetium uptake. In 8 of these cases, clinical onset in late childhood, high frequency of antithyroid antibodies and of familial thyroid dysfunction were similar to those found in childhood's thyroiditis. 8 other cases had a precocious onset (first months in 6, first year in 1, second year in 1) with some pretracheal iodine uptake when first studied and no uptake at further examinations, 1 patient having received no treatment from first to second study, the others being without treatment from more than two months and certain of them receiving injections of TSH. The last 5 cases of this group were those of children born to 2 mothers with treated hypothyroidism, with low iodine uptake in pretracheal place. The role of genetic factors and auto-immunity in theses cases is discussed. The 6 other patients had clinically isolated hypothyroidism secondary to TSH deficiency, eventually associated to clinically inapparent GH or ACTH deficiencies, most of them by hypothalamic defect with normal response to TRH.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000175:diagnosis / Q000378:metabolism; D007223:Infant; D007455:Iodine / Q000378:metabolism*; D007457:Iodine Radioisotopes; D008297:Male; D013961:Thyroid Gland / Q000378:metabolism
chemical_list: D007457:Iodine Radioisotopes; D007455:Iodine
vernacular_title: Hypothyroidies infantiles et juveniles avec glande en place et fixation faible de radio-iode