Some patients have hyperthyroidism related to a nodule with autonomous function (AFTN). Autonomously functioning thyroid nodules can create symptoms of fatigue and rapid heart rate. The determination of AFTN is optimally made with an I131 Iodine Uptake Scan to show increased iodine uptake in the nodule compared to the remainder of the gland. This alternative therapy destroys these nodules with RFA, avoiding both surgery and hypothyroidism. Restoration of normal thyroid function is accomplished in most patients. No daily thyroid medications are required after Thyroid RFA of AFTNs!

Hyperthyroidism caused by Grave’s disease is not managed with this therapy.