How thyroid cancer is treated in Korea

Outcomes, confirmed by national statistics

For people diagnosed with thyroid cancer in Korea between 2019 and 2023, the 5-year relative survival rate is 100.2%. A figure above 100% means survival is no different from that of the general population of the same age. These figures come from the national cancer registry, not from one hospital. The US SEER figure is 98.3% (diagnosed 2016–2022).

Korea diagnosed more than 35,000 cases of thyroid cancer in 2023 alone. Ultrasound screening is common, so a high share of tumors are found while still small, and the criteria for deciding whether to operate right away or to monitor are well established.

For patients coming from abroad, this means the review focuses less on survival and more on the extent of surgery, scarring, and hormone management after the operation.

The treatment path depends on size and location

Papillary cancer 1 cm or smaller with no lymph node metastasis can often be treated with a lobectomy, removing only one lobe, and in some cases it is monitored with regular testing instead of surgery. When the tumor is larger, is present on both sides, or has spread to lymph nodes, a total thyroidectomy with lymph node dissection is performed.

Surgery can be done through a small incision at the front of the neck, or through the armpit, the areola, or inside the mouth using robotic or endoscopic techniques that leave no scar on the neck. Korea has extensive experience with robotic thyroid surgery. The hospital stay is 2–3 days.

If there is a risk of recurrence after total thyroidectomy, radioactive iodine therapy follows, and thyroid hormone is taken for life. Hormone dose adjustment and regular ultrasound can be continued with your doctors at home after you return, and we provide a handover document.

What international patients actually pay

Based on published hospital prices, thyroid resection runs roughly USD 7,000–15,000, and robotic surgery costs more. Radioactive iodine therapy includes an isolation stay in hospital and is quoted separately.

The estimate lists tests, surgery, hospital stay, medication, interpretation, and accommodation as separate line items. If you proceed to treatment after a pre-arrival review, the review fee is credited against your medical bill.

What is possible in your case

Do you need surgery or can you be monitored? Lobectomy or total thyroidectomy? Is scarless robotic surgery possible? Is radioactive iodine therapy needed? The written opinion answers in that order.

Send us your ultrasound images and fine-needle aspiration cytology results, thyroid function tests, and your diagnosis. Endocrine surgeons and endocrinologists will review them and give you a written opinion within 5 business days.

Frequently asked questions

Is it really all right to monitor instead of operating?

For papillary cancer 1 cm or smaller with no risk factors, monitoring with regular ultrasound is one of the standard options. We set out the conditions in your written opinion.

Can I avoid a scar on my neck?

Robotic or endoscopic surgery through the armpit or inside the mouth can avoid a neck scar. Whether it is possible depends on the size and location of the tumor.

Will my voice change after surgery?

Preserving the recurrent laryngeal nerve is central to the operation, and temporary changes usually resolve. Many hospitals use nerve monitoring equipment.

How long a stay should I plan for?

About ten days for surgery. If radioactive iodine therapy is needed, you either return 4–6 weeks after surgery or extend your stay.

How do I get my hormone medication?

Before you return home we provide a prescription and dosing instructions, along with a handover document so your doctors at home can continue the adjustments.