The influence of the thyroid gland in cases of diabetes has been recognized since Dumonpallier reported a case of glycosuria with exophthalmic goiter in 1867.1 Since then there have been many reports in which it has been attempted to establish a relationship between disease of the thyroid gland and diabetes. By far the majority of the reports deal with the association of hyperthyroidism and diabetes.
Sanger and Hun2 observed the existence of hyperglycemia in cases of hyperthyroidism and thought the hyperglycemia due to faulty storage of dextrose. Joslin and Lahey3 found that 38.6 per cent of 5,908 patients with hyperthyroidism had glycosuria. Friedman and Gottesman4 also expressed the belief that there is a definite relationship between hyperthyroidism and diabetes and even suggested thyroidectomy for the cure of juvenile diabetes. Wilder and his associates5 performed a total thyroidectomy on a patient with diabetes who had no