Thyroid surgery — thyroidectomy — removes part or all of the thyroid gland. It is a common and generally well-tolerated operation, most often performed for thyroid cancer, a large goitre, an overactive thyroid that has not responded to other treatment, or a nodule that needs removal.
Knowing what to expect makes the process far less daunting.
Types of thyroid surgery
- Hemithyroidectomy (lobectomy) — removal of one lobe; the remaining lobe usually continues to produce hormone.
- Total thyroidectomy — removal of the whole gland; lifelong thyroid hormone replacement is needed.
- Completion thyroidectomy — removal of the remaining lobe after an initial lobectomy, often when cancer is found.
The right operation depends on the diagnosis, the size and position of the problem, and whether cancer is suspected.
Before surgery
Your thyroid function should be optimised beforehand — an overactive thyroid is usually controlled with medication first, because uncontrolled hyperthyroidism increases surgical risk. You may have blood tests, a neck ultrasound and, for cancer, staging investigations.
Your surgeon will explain the plan, the risks and what to expect. It is worth writing down questions in advance.
The operation
Thyroid surgery is performed under general anaesthetic and usually takes one to two hours. The incision is made in a natural skin crease in the lower neck, so the scar tends to fade well over time.
The surgeon works close to two important structures: the recurrent laryngeal nerves, which control the vocal cords, and the parathyroid glands, which control calcium. Protecting these is a central part of the operation.
Immediately afterwards
Most people stay in hospital for a short period — often a day or two. You may have a drain in the neck for a short time, and some soreness and swelling are normal. Your voice may be hoarse or tired for a while.
Calcium levels are usually checked after surgery because the parathyroid glands can be temporarily disturbed.
Recovery at home
- Expect to take it easy for the first week or two.
- Avoid heavy lifting and strenuous activity for a few weeks.
- The scar heals over weeks and fades over months; protecting it from the sun helps.
- Voice fatigue is common and usually improves.
Risks to be aware of
Thyroid surgery is safe in experienced hands, but no operation is risk-free. Possible complications include:
- Low calcium — from parathyroid disturbance; usually temporary, sometimes needs calcium and vitamin D.
- Voice change — from nerve handling; usually temporary, rarely permanent.
- Bleeding or infection — uncommon.
- Scar — usually acceptable and improves with time.
Your surgeon will discuss these in detail.
Life after thyroid surgery
If the whole gland is removed, you will take levothyroxine every day for life, adjusted by blood tests. After a lobectomy, many people need no medication, though some require replacement later.
For thyroid cancer, surgery is often followed by monitoring and sometimes radioactive iodine. Regular follow-up continues for years.
The bottom line
Thyroid surgery is a well-established treatment with good outcomes. Preparing well, understanding the plan and attending follow-up appointments all help ensure a smooth recovery. If surgery is recommended, ask your surgeon about the type of operation, the risks, and what your follow-up will involve.