Thyroidectomy
Thyroidectomy is surgical removal of the thyroid gland — either partially (lobectomy/hemithyroidectomy) or completely (total thyroidectomy).
It is indicated for thyroid cancer, large compressive goitres, and selected cases of hyperthyroidism.
Last medically reviewed: 1 November 2025
Key points
- Thyroidectomy removes part or all of the thyroid.
- It is used for cancer, large goitres, nodules and some hyperthyroidism.
- Risks include voice change and low calcium.
- Lifelong levothyroxine is needed after total removal.
When surgery is recommended
Total thyroidectomy is standard for most thyroid cancers and for Graves’ disease with large goitre or eye disease. Lobectomy may suffice for small, low-risk cancers confined to one lobe or for benign unilateral disease.
Benign indications include compressive goitres causing breathing or swallowing difficulty, and toxic nodules not suitable for other treatments.
The procedure
Performed under general anaesthesia through a neck incision, typically as day surgery or short stay. The surgeon removes the targeted lobe(s), carefully preserving the parathyroid glands (which control calcium) and recurrent laryngeal nerves (which control voice).
Modern techniques may include intraoperative nerve monitoring to reduce vocal cord risk.
Recovery and lifelong considerations
Most patients recover within 1–2 weeks. Temporary hoarseness or voice changes can occur; permanent damage is uncommon with experienced surgeons. Temporary low calcium (from parathyroid effects) is monitored and treated.
After total thyroidectomy, lifelong levothyroxine is required. After lobectomy, the remaining lobe often maintains function, though hypothyroidism can still develop — monitoring continues.
Frequently asked questions
Will I have a visible scar?
The incision is typically 3–5 cm in a natural skin crease — it fades significantly over months. Some surgeons offer minimally invasive approaches for suitable cases.
What are the main risks?
Recurrent laryngeal nerve injury (hoarseness — usually temporary), hypoparathyroidism (low calcium — usually temporary), bleeding, and infection. Experienced surgeons minimize these risks.
Do I need lifelong medication after thyroidectomy?
After total thyroidectomy, yes — lifelong levothyroxine. After lobectomy, the remaining gland often suffices, but monitoring continues because hypothyroidism can develop.
References & further reading
This page is based on established medical knowledge and guidelines from authoritative sources. Always consult a qualified clinician for personal medical advice.
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