Most thyroid nodules need no treatment at all. When a benign nodule does cause trouble, surgery is no longer the only option. This page explains when treatment makes sense and how the options compare, so you can make the decision with your physician.
When does a nodule need treatment?
Treatment is worth discussing when a nodule is confirmed benign and:
- It causes pressure, a choking sensation or difficulty swallowing
- It forms a visible lump that bothers you
- It keeps growing on follow-up ultrasound
- It is a cyst that refills after being drained
- It produces too much thyroid hormone (a “hot” or toxic nodule)
Nodules that are suspicious or cancerous on biopsy are managed differently, usually with surgery, and we refer to experienced thyroid surgeons. If you have not yet had a full evaluation, start with thyroid nodule evaluation.
Your options at a glance
| Option | Best suited for | What to know |
|---|---|---|
| Observation | Small, benign nodules without symptoms | Periodic ultrasound; no procedure |
| Radiofrequency ablation (RFA) | Benign solid or mixed nodules causing symptoms or a visible lump; some hot nodules | Office procedure under local anesthesia; no incision; the thyroid keeps working |
| Ethanol ablation | Benign cysts that keep refilling | Office procedure; fluid is drained and a small amount of alcohol is injected |
| Radioactive iodine | Hot nodules and toxic multinodular goiter | A capsule taken by mouth; can lead to underactive thyroid over time |
| Surgery | Suspicious or cancerous nodules; very large goiters; patients who prefer removal | Removes half or all of the thyroid; general anesthesia; thyroid hormone replacement after total thyroidectomy |
Radiofrequency ablation (RFA)
RFA uses a thin needle-electrode, guided by ultrasound, to heat and destroy nodule tissue from the inside. The body then gradually absorbs the treated tissue, and the nodule shrinks over the following months. The procedure is done in the office under local anesthesia, takes roughly an hour, and most people return to normal activities within a day or two. There is no scar, and because healthy thyroid tissue is left alone, thyroid function is usually preserved.
Serious complications are uncommon. The most important risk is a temporary change in voice from irritation of the nerve to the vocal cords; permanent nerve injury is rare in experienced hands.
Our physicians perform thyroid RFA at our La Jolla office. We presented six-month outcomes in 118 consecutive patients treated between 2023 and 2025 at ENDO 2026, where ours was the only practice invited to give an oral presentation on thyroid RFA. Procedure details, recovery and candidacy are covered at San Diego Interventional Endocrinology.
Ethanol ablation for thyroid cysts
Cysts that are mostly fluid often refill after a simple drainage. In ethanol ablation, the cyst is drained under ultrasound and a small amount of pure alcohol is injected, which scars the cyst wall and keeps it from refilling. It is quick, done in the office, and often effective after one session.
Surgery
Surgery remains the right choice for nodules that are cancerous or suspicious, for very large goiters extending into the chest, and for people who prefer to have the nodule removed. Removing half the thyroid (lobectomy) often leaves enough function to avoid thyroid hormone; removing the whole gland requires lifelong replacement. When surgery is the better option, we tell you so and refer you to an experienced surgeon. For a side-by-side look, see thyroid RFA vs. surgery.
What we do not recommend
Thyroid hormone in high doses to shrink benign nodules is no longer recommended for most patients; it is not very effective and can harm the heart and bones. Iodine supplements and unregulated “thyroid support” products do not treat nodules.
Common questions
Is RFA covered by insurance?
Coverage varies by plan. Please contact our office before scheduling so we can discuss your plan.
Will my nodule disappear completely after RFA?
Usually not completely. The goal is enough shrinkage to relieve symptoms or the visible lump. Most of the reduction happens within the first six to twelve months.
Do I need a biopsy before RFA?
Yes. RFA is used only for nodules confirmed benign, typically by ultrasound-guided biopsy. Thyroid ultrasound and biopsy.
Discuss your treatment options
Thyroid procedures are performed at our La Jolla office. Call (858) 622-7200 or send a request.
Sources: Haugen BR, et al. 2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer. Thyroid. 2016;26:1–133. Papini E, et al. 2019 European Thyroid Association clinical practice guideline for the use of image-guided ablation in benign thyroid nodules. Eur Thyroid J. 2020;9:172–185. Written by Darius A. Schneider, MD, PhD. Reviewed October 2026.
