Thyroid surgery: nodules, goitre and cancer, and what the operation means for you

The American Thyroid Association lists four main reasons: a nodule that is suspicious for cancer on needle biopsy or molecular testing, a confirmed thyroid cancer, a goitre that makes it hard to breathe, swallow or lie flat, and an overactive thyroid caused by a toxic nodule, Graves' disease or toxic multinodular goitre (ATA).

A recurrent cyst or a nodule whose biopsy is indeterminate can also be reasons to operate (British Thyroid Foundation). In every case, surgery is weighed against watching and waiting.

Thyroid nodules are very common: by age 60, about half of all people have one, and over 90% are benign (ATA). Blood tests (TSH and T4) show whether the gland works normally, but they are usually normal even when a nodule contains cancer.

The key tests are an ultrasound, which measures the nodule and looks for worrying features, and an ultrasound-guided fine-needle aspiration (FNA) biopsy. Up to 20% of biopsies are indeterminate; follicular lesions turn out to be cancer 20% to 30% of the time, and the diagnosis then needs surgery (ATA).

Nodules with cancer or a high suspicion of cancer should be removed by an experienced thyroid surgeon (ATA). Benign nodules generally do not need removal unless they cause pressure symptoms such as choking or difficulty swallowing, keep growing or develop worrying ultrasound features.

If your nodule is benign and causing no trouble, regular ultrasound follow-up is often the right plan. Surgery is never decided from a scan report alone; it follows examination, the biopsy result and a clear discussion of the options.

A lobectomy (hemithyroidectomy) removes one half of the gland. It carries no risk of low calcium, and the remaining half may make enough hormone, although some people still need tablets (ATA); about 10% to 15% develop an underactive thyroid (BTF). It is often used for indeterminate nodules, with the rest removed later if cancer is found (ATA).

A total thyroidectomy removes the whole gland and means lifelong thyroid hormone. It is typically needed for high-risk thyroid cancers, Graves' disease and large goitres (ATA).

Surgery is the most common treatment for thyroid cancer, removing part or all of the gland depending on the type and stage. Neck lymph nodes may also be removed if the cancer has spread, or might have spread, to them (NHS). Most cancers found on biopsy are of the papillary type (ATA).

After surgery, some patients have radioactive iodine, given as a drink or tablet, to treat remaining cells or lower the risk of recurrence; thyroid hormone tablets also help reduce that risk (NHS). These decisions are made with the endocrinology and oncology members of the team.

You are under a general anaesthetic with a breathing tube, so a sore throat afterwards is common. Removing the whole gland typically takes one to three hours, and a lobectomy less (Cleveland Clinic).

Through a cut in the front of the neck, the surgeon removes the thyroid while protecting the voice nerves and the four small parathyroid glands that control calcium. Nerve monitoring can predict how the nerve is working, but it does not prevent injury (ATA).

Bring your ultrasound images and report, the biopsy (FNA) report and recent thyroid blood tests to the consultation, with a list of your medicines. If the thyroid is overactive, tell the team, as it may need treatment first.

Tell the surgeon if you use your voice professionally, for example as a teacher or singer, because even subtle changes in high pitch or projection matter to you (ATA). Plan for a short stay and about two weeks without heavy lifting.

The usual hospital stay is one to two days. After a hemithyroidectomy you may go home the same day; after a total thyroidectomy you will almost always stay at least one night (BTF). Full recovery takes about two to three weeks, and strenuous exercise and heavy lifting wait at least one to two weeks (Cleveland Clinic).

Energy can take up to a month to return. The scar is usually most noticeable at 6 to 8 weeks and settles over six months to a year (BTF).

The recurrent laryngeal nerve moves the vocal cord. The ATA gives a 5% to 7% risk of temporary hoarseness, which usually improves on its own, and about 0.5% for a lasting nerve injury (ATA); the British Thyroid Foundation quotes one to two per cent for lasting nerve problems (BTF). Figures vary with the extent of surgery and the surgeon's experience.

After a total thyroidectomy, low calcium can follow if the parathyroid glands are affected; the ATA puts the chance that all four are damaged or removed at 1% to 3% (ATA). Over 40% of patients go home on calcium or vitamin D tablets, and most stop once levels settle (BTF). Wound infection affects fewer than 1%, and serious bleeding is rare, usually within the first hours (ATA).

• Neck swelling that grows quickly, or any difficulty breathing: go to an emergency department at once, as bleeding can press on the airway (Cleveland Clinic)
• Tingling or numbness in the fingers or around the lips, or muscle cramps, which can mean low calcium (ATA)
• A temperature of 38°C or higher
• Swelling, bleeding or pus at the wound (Cleveland Clinic)

After a total thyroidectomy you will need levothyroxine for life, usually started immediately or very soon after surgery (BTF). It replaces the hormone the gland used to make, and it is taken as one daily tablet.

Finding the right dose can take several months of blood tests and small adjustments. After a lobectomy, some people need a small dose and others none at all (BTF).

For a goitre causing pressure, surgery aims to relieve breathing and swallowing problems. For cancer, the outlook depends on the type and stage confirmed by the pathologist, and your team will explain your own situation and follow-up plan.

The same team approach guides breast cancer surgery and stomach cancer surgery.

Sources: ATA, ATA, BTF. The extent of surgery is agreed after the biopsy and team review.

The cost depends on the hospital and room class, whether it is a lobectomy or total thyroidectomy, whether neck lymph nodes are also removed, nerve monitoring equipment, the length of stay and pathology. Calcium checks and follow-up visits add to it; radioactive iodine, if needed, is priced separately.

To review your ultrasound and biopsy and get a current written quote, book a consultation with Dr. Yasser, and ask the clinic about payment options.