Abstract
Thyroid gland volume, ultrasonically determined, and thyroid function were investigated in 40 patients with chronic renal failure (33 of these on hemodialysis) and 40 sex-, age- and weight-matched healthy controls. None had thyroid autoantibodies or a clinically detectable goiter. The median thyroid gland volume was significantly elevated in the uremic patients: 24 ml (range 8-43 ml) compared with the healthy controls 17 ml (range 10-22 ml) (p less than 0.005). The serum concentrations of thyroxine (T4), triiodothyronine (T3), free thyroxine index (FT4I) and free triiodothyronine index (FT3I) were significantly decreased in uremic subjects compared with the controls. The serum concentration of thyrotropin did not differ significantly between patients and controls. None of the thyroid function variables correlated with thyroid gland volume. In conclusion, thyroid gland volume was increased in patients with chronic renal failure. The alterations in thyroid hormone concentrations could, however, not explain this finding.
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