[Partial resistance to thyroid hormones in a patient with a euthyroid goiter (author's transl)].

This case report deals with a 40 year-old female with goiter, elevated levels of peripheral thyroid hormones without the clinical picture of hyperthyroidism, and an exaggerated response to TSH and TRH. The fact that a feedback conversion appeared after progressive doses of T3 is outlined. Taking into account the elevated T3/T4 ratio, the high rT3, and the fact that all other pituitary hormones remained normal in the presence of increased levels of thyroid hormones, it is concluded that the case was one of incomplete universal resistance of the thyroid hormone receptors. Other individual and familial reported cases are reviewed, and emphasis is made on the fact that the receptors have been normal when studied.