Is There a Role for the Thyroid Gland in Renal Calcium-Stone Formation?
Little is known about stone formation in endocrine disorders of the thyroid gland such as hypo- and hyper-thyroidism (1). We examined 31 female individuals: euthyroid healthy controls (n=10); hypothyroid patients (n=13); and hyperthyroid patients (n=8). Goitrous and non-goitrous subjects without a history of stones were found in the two patient populations. The age range of the study populations was 16–83 years. We measured calcio-tropic hormones and variables of mineral metabolism in serum and urine, the relative supersaturation products (RSP) using EQUIL, and the discriminatory index (DI) (2).