A thyroidectomy is the removal of the thyroid gland, which in current practice is performed chiefly as a total thyroidectomy. Critical is the protection of the recurrent laryngeal nerves (voice) and the parathyroid glands (calcium).
What is a thyroidectomy?
It is the removal of the thyroid gland, in current practice performed chiefly as a total thyroidectomy. The gland lies in close relation to two critical structures: the recurrent laryngeal nerves (vocal cord movement) and the parathyroid glands (calcium regulation).
The safety of the operation rests on meticulous preservation of these structures; it therefore requires detailed, near-bloodless technique.
When is it needed?
It is indicated for cancer or strong suspicion of malignancy (a suspicious Bethesda cytology), a large or retrosternal goitre with compressive effects, and hyperthyroidism/Graves' disease refractory to medication.
Where oncologically indicated, a lymph node dissection (central and/or lateral neck) is added. The decision is individualised to the cytology/histology.
Preparation
Work-up includes neck ultrasound, fine-needle aspiration (FNA) with Bethesda classification, thyroid hormones, calcium/vitamin D and, where indicated, laryngoscopy to check the vocal cords pre-operatively.
How it's done
Through a small neck incision, the whole gland is removed with careful dissection. Intra-operative nerve monitoring is used to identify and protect the recurrent laryngeal nerves, while the parathyroids are preserved with their blood supply — and, if devascularised, are autotransplanted.
Where oncologically indicated, lymph node dissection is incorporated in the same operation. Haemostasis is meticulous given the proximity to the airway.
Total thyroidectomy
The standard extent today — removal of the whole gland, with safe management and clear post-operative follow-up.
Lymph node dissection
Where oncologically indicated, a dissection of the cervical lymph nodes is added.
Nerve monitoring
Intraoperative nerve monitoring & careful parathyroid preservation to protect voice/calcium.
Recovery
Hospital stay is usually 1 day. Calcium is monitored (a transient drop is possible) and supplemented where needed. After total thyroidectomy, lifelong daily thyroxine replacement is required, with regular adjustment — a simple, well-tolerated treatment.
Mild hoarseness or voice fatigue in the first weeks is possible and usually settles.
Risks & outcomes
Specific complications: hypocalcaemia from transient or, rarely, permanent parathyroid underactivity; hoarseness from recurrent nerve injury (usually transient); and a rare but urgent post-operative neck haematoma. Nerve monitoring and parathyroid preservation reduce these risks.
"Success" means complete removal with an intact voice and stable calcium.
Frequently asked questions
Will my voice change?
The aim is to protect the nerves of the voice by carefully identifying them. Temporary change can rarely occur; permanent injury is very rare in specialist hands.
Will I need medication afterwards?
After a total thyroidectomy, daily thyroxine replacement is needed, adjusted with regular checks. It is a simple, well-tolerated treatment.
What about calcium?
The parathyroid glands, which regulate calcium, are carefully preserved. Calcium is monitored after surgery and, if needed, temporary supplementation is given.
Will there be a visible scar?
The incision is placed in a natural skin crease at the base of the neck and usually fades with time.