What is thyroid surgery
The thyroid gland is located at the base of the neck and produces hormones that regulate metabolism, heart rate, and body temperature.
Thyroid surgery involves removing part or all of the thyroid gland, depending on the condition being treated.
The most common procedures include:
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Thyroid lobectomy: removal of one lobe of the thyroid
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Total thyroidectomy: removal of the entire thyroid gland
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Lymph node dissection: removal of lymph nodes in cases of thyroid cancer
The goal of surgery is to treat the disease while preserving important nearby structures such as the recurrent laryngeal nerve, which controls the vocal cords, and the parathyroid glands, which regulate calcium levels.
When is Thyroid Surgery Recommended?
Thyroid surgery may be recommended in several situations.
Thyroid nodules
Thyroid nodules are common and usually benign. Surgery may be recommended when:
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the nodule is suspicious or malignant on biopsy
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the nodule increases in size
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it causes swallowing or breathing discomfort
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it creates visible neck enlargement
Thyroid cancer
Surgery is the primary treatment for most thyroid cancers. Depending on the type and stage of the tumor, treatment may involve total thyroidectomy with or without lymph node removal.
Hyperthyroidism
In some cases of hyperthyroidism, such as Graves’ disease or toxic nodules, surgery may be recommended when medication or radioactive iodine is not suitable.
Goiter
A large thyroid enlargement can compress nearby structures and lead to symptoms such as:
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difficulty swallowing
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breathing discomfort
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pressure in the neck
Surgery can relieve these symptoms.
Types of Thyroid Surgery
Thyroid Lobectomy
A thyroid lobectomy involves removing one half of the thyroid gland.
It is typically performed when:
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unilateral goiter
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unilateral suspicious nodule
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the disease is limited to one lobe (toxic nodule)
In many cases, thyroid function remains normal after this procedure.
Thyroid cancer
A total thyroidectomy removes the entire thyroid gland.
This procedure is usually recommended for:
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thyroid cancer greater than 4 cm
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large multinodular goiter
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certain cases of hyperthyroidism like Graves' disease
After total thyroidectomy, patients require lifelong thyroid hormone replacement therapy.
Lymph node dissection
If thyroid cancer has spread to nearby lymph nodes, the surgeon may perform a lymph node dissection.
This procedure helps improve cancer staging and reduce the risk of recurrence.
Preparing for thyroid surgery
Before surgery, patients undergo a thorough evaluation that may include:
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thyroid ultrasound
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fine needle aspiration biopsy
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blood tests to evaluate thyroid function
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vocal cord examination if necessary (rare)
During the consultation, the surgeon explains the diagnosis, the recommended surgical approach, and the expected recovery.
How Thyroid Surgery is Performed
Thyroid surgery is performed under general anesthesia.
The procedure involves:
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A small incision at the base of the neck
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Careful identification of the recurrent laryngeal nerve
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Preservation of the parathyroid glands
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Removal of the thyroid tissue concerned
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Closure of the incision with surgical glue
The operation usually lasts between one and two hours.
Most patients stay one night in hospital for total thyroidectomy, but outgoing patient is possible for lobectomy.
Recovery After Thyroid Surgery
Recovery after thyroid surgery is generally quick.
Patients can usually:
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eat and talk just after the surgery
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take a shower the evening of the surgery
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return home the day after surgery (or outgoing patient for lobectomy)
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resume light activities within a few days
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return to work within two to three weeks
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return to sport after three weeks
If the entire thyroid gland has been removed, thyroid hormone replacement therapy will be started.
Follow-up appointments ensure proper healing and hormone balance.
Risks and possible complications
Thyroid surgery is considered a safe and well-established procedure when performed by an experienced endocrine surgeon.
However, as with any surgery, some risks exist.
Voice changes
Temporary hoarseness may occur due to injury of the nerve controlling the vocal cords. Permanent nerve injury is rare (< 1 %).
Low calcium levels
Temporary hypocalcemia may occur if the parathyroid glands are affected. This is usually temporary and treated with calcium supplements. Permanent hypoparathyroidism is rare (< 1 %)
Cervical hematoma
Postoperative bleeding is uncommon (< 1 %) but may require urgent management.
Scar
The incision is placed in a natural skin crease and usually heals with a discreet scar.
Monitoring of the Recurrent Laryngeal Nerve During Surgery
During thyroid surgery, special attention must be paid to the recurrent laryngeal nerve, which controls the movement of the vocal cords and therefore plays a crucial role in voice production.
Although injury to this nerve is uncommon (around 1% of cases), it can lead to symptoms such as hoarseness or swallowing difficulties. For this reason, careful identification and monitoring of the nerve during surgery are essential.
The Role of the Recurrent Laryngeal Nerve
The recurrent laryngeal nerve runs very close to the thyroid gland. On the left side, it loops around the aortic arch before ascending toward the larynx. On the right side, it loops around the subclavian artery.
This nerve innervates the muscles responsible for controlling the vocal cords. Damage to this nerve during surgery may lead to dysphonia (hoarseness) or dysphagia (difficulty swallowing) depending on the severity of the injury.
Intraoperative Nerve Monitoring
To reduce the risk of nerve injury, many thyroid surgeons now use intraoperative nerve monitoring (IONM).
This technique involves placing electrodes on the laryngeal muscles during surgery. The surgeon can then stimulate the nerve electrically and monitor the response of the vocal cord muscles in real time.
If an abnormal response is detected, the surgeon can immediately adjust the surgical technique to protect the nerve.
Hyperthyroidism
Fortunately, most nerve injuries are temporary, and symptoms such as hoarseness usually improve within weeks or months, sometimes with the help of speech therapy.
Permanent nerve damage is very rare and occurs in less than 1% of cases.
Goiter
A large thyroid enlargement can compress nearby structures and lead to symptoms such as:
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difficulty swallowing
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breathing discomfort
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pressure in the neck
Surgery can relieve these symptoms.
Frequently Asked Questions About Thyroid Surgery
Is thyroid surgery painful?
Most patients experience mild discomfort rather than significant pain. Pain is well controlled with standard medication.
How long is the hospital stay?
In most cases, patients stay one night in hospital.
Will I need lifelong medication?
Only patients who undergo total thyroidectomy require lifelong thyroid hormone replacement.
How visible is the scar?
The incision is placed in a natural crease at the base of the neck, and the scar usually becomes discreet over time.
When can I return to normal activities?
Most patients return to normal activities within one to two weeks.
