Hyperthyroxinemia secondary to multiple myeloma: One case report / 中华内分泌代谢杂志

The thyroid function test is universally used for the evaluation of thyroid function. However, there are factors other than endocrine diseases, such as special physiological conditions, interference in laboratory measurement, or disorders in other systems that should be taken into consideration. When encountering thyroid function test results that are not in line with clinical manifestation, a comprehensive evaluation is essential for a correct and timely diagnosis. We presented a case of a significant rise in serum total triiodothyronine(TT 3) secondary to multiple myeloma. Through case studies and literature review, we intended to provide clinicians with experience for better interpretation of abnormal thyroid function test results.