A thyroidectomy is the surgical removal of all or part of the thyroid gland. It is one of the most commonly performed endocrine surgeries and is used to treat thyroid cancer, large goiters, hyperthyroidism, and suspicious thyroid nodules.
Types of Thyroidectomy
- Total thyroidectomy — Complete removal of the thyroid; required for thyroid cancer, Graves' disease, and large multinodular goiters
- Hemithyroidectomy (lobectomy) — Removal of one lobe; used for isolated nodules or single-lobe disease; some thyroid function may be preserved
- Near-total thyroidectomy — Removal of all but a small remnant; less commonly performed today
- Completion thyroidectomy — Removal of remaining thyroid tissue after a prior lobectomy, when cancer is found in the specimen
When Is Thyroidectomy Recommended?
- Thyroid cancer (confirmed or highly suspected)
- Large goiter causing compression symptoms
- Graves' disease (when antithyroid drugs and RAI are not appropriate)
- Toxic multinodular goiter
- Suspicious or indeterminate thyroid nodules with high-risk features
The Procedure
Thyroidectomy is performed under general anesthesia and typically takes 1–3 hours. The surgeon makes an incision in the lower neck and carefully removes the thyroid while protecting adjacent structures: the parathyroid glands, the recurrent laryngeal nerves (which control voice), and major blood vessels. Most patients go home the same day or after one night in the hospital.
Potential Complications
Thyroidectomy is generally safe when performed by experienced surgeons, but potential complications include:
- Hypoparathyroidism — Low calcium due to accidental damage or removal of parathyroid glands; can be transient or permanent; treated with calcium and vitamin D supplements
- Vocal cord injury — Damage to the recurrent laryngeal nerve causing hoarseness or voice changes; usually temporary
- Bleeding or hematoma — Rare but potentially serious
- Infection — Uncommon
After Thyroidectomy
After total thyroidectomy, patients require lifelong thyroid hormone replacement with levothyroxine. Calcium and vitamin D supplementation may be needed initially (and sometimes permanently if parathyroid damage occurred). An endocrinologist plays a crucial role in optimizing levothyroxine dosing and managing the nuances of post-thyroidectomy care, especially in thyroid cancer patients where TSH suppression may be targeted.
Key Takeaways
- Thyroidectomy removes all or part of the thyroid gland
- It's used for cancer, large goiters, Graves' disease, and suspicious nodules
- Lifelong levothyroxine is required after total thyroidectomy
- Watch for low calcium (hypoparathyroidism) after surgery — a common early complication
- An endocrinologist should manage thyroid hormone replacement after surgery