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In 569 unselected elderly subjects over 60 years from the general population of an iodine-deficient area, a palpation and an ultrasound investigation of the thyroid were performed. Additionally, thyroid hormone values were determined in 466 of the 569 subjects (81.9%) and urinary iodine excretion in 491 subjects (86.3%). By palpation, no thyroid enlargement was noticed in 302 subjects (54.2%), goitre Ia in 98 (17.6%), goitre Ib in 94 (16.9%), goitre II in 53 (9.5%), and goitre III in 10 (1.8%). The thyroid volumes (medians) by ultrasound were 18.6 ml in the entire group, in women (N = 489) 19.2 ml, and in men (N = 80) 16.6 ml. One hundred and one subjects had a thyroid nodule (17.6%), 43 persons cystic lesions (7.6%). If, according to the literature, a goitre is defined as a thyroid enlargement of more than 18 ml in women and more than 25 ml in males, a goitre prevalence of 54.2% in females and of 22.5% in males was obtained. The goitre prevalence in the entire group was calculated as 49.7%. Thyroid hormone measurements showed in subjects with goitre a significant lower TSH value (p less than 0.001) and a higher thyroglobulin value (p less than 0.001). In summary, the study shows a high prevalence of goitre in elderly subjects, a high prevalence of nodules in these thyroids, a negative correlation of goitre volume with TSH, and a positive correlation of goitre volume with the thyroglobulin concentration.
Hintze et al. (Tue,) studied this question.