Thyroid Cancer Treatment: How Long Is the Stay in Korea in 2026?

For surgery-only cases, the target stay in Korea is about ten days, while patients who also need radioactive iodine therapy either return 4–6 weeks after surgery or extend their stay to fit it into the schedule.

Key takeaways

• If you are only having surgery, the target stay is about ten days around the operation (as confirmed by the platform).
• Hospitalization for the thyroid surgery itself is usually 2–3 days, and for surgery-only patients, return to daily life generally happens within 1–2 weeks.
• If radioactive iodine (RAI) therapy is needed, patients either come back 4–6 weeks after surgery or extend their stay, and the isolation hospitalization period is built into the schedule.
• Korea's 5-year relative survival rate for thyroid cancer is 100.2% (National Cancer Registry statistics, 2019–2023), so outcomes are generally excellent and treatment tends to focus less on whether a cure is achieved and more on the extent of resection, scarring, and hormone management.
• The remote review (pre-arrival review) fee of KRW 1,000,000 is a fixed amount, and it is deducted from treatment costs once you sign a treatment agreement.

What does the actual schedule look like for surgery-only patients?

• After arrival, staging and risk classification are confirmed through ultrasound, fine-needle aspiration cytology, thyroid function tests, and similar exams, after which the surgery date is set. Hospitalization is usually 2–3 days, and for the first few days after surgery there may be tightness when moving the neck and some discomfort swallowing, which improves over the following weeks.
• Patients who undergo total thyroidectomy may go through a hormone dose adjustment period lasting weeks to months, during which fatigue, weight changes, and cold sensitivity can occur. However, this adjustment process itself is not a reason to extend hospitalization or your stay in Korea, and it is generally easy to continue after returning home.
• The overall target stay of about ten days around the surgery reflects the outpatient visits needed for post-surgical recovery, wound checks, and pathology result review. The exact dates are finalized based on test results and the hospital's schedule, and will vary by individual.

If radioactive iodine therapy is needed, how much longer is the stay?

• Radioactive iodine therapy uses the property of thyroid cells to absorb iodine in order to eliminate remaining tissue and micro-metastases after surgery. It is considered for patients with a risk of recurrence after total thyroidectomy or those with iodine-absorbing metastases. It is not needed for every patient, and may be omitted if recurrence risk is low.
• When this therapy is needed, there are two approaches: returning 4–6 weeks after surgery for the treatment, or extending the initial stay to complete everything in one visit. A low-iodine diet is required before treatment, and during treatment, side effects such as dry mouth, salivary gland swelling, taste changes, and nausea are common; a period of isolation hospitalization may also be required.
• It is common practice to build the isolation hospitalization period into the stay schedule in advance. The specific duration and timing vary depending on recurrence risk classification and the hospital's schedule.

What is the step-by-step process for the stay?

1. Step 1, remote review (pre-arrival review) — Upload records such as ultrasound, cytology, and thyroid function tests, and you will receive a written opinion within 5 business days. The fee is KRW 1,000,000, which is deducted from treatment costs once you sign a treatment agreement.
2. Step 2, arrival and confirmatory tests — After arrival, necessary tests are completed and the surgery or treatment schedule is finalized.
3. Step 3, surgery or procedure — Hospitalization is 2–3 days, with the approach varying depending on whether total thyroidectomy is performed and the extent of lymph node dissection.
4. Step 4, recovery and outpatient follow-up — Outpatient visits are held to check the wound and review pathology results, and a decision is made on returning home. For surgery-only patients, it is common to return home at this point.
5. Step 5, radioactive iodine therapy (if needed) — This is carried out either by returning 4–6 weeks after surgery or by extending the stay, and includes the isolation hospitalization period.
6. Step 6, post-return management — Hormone dose adjustment and regular ultrasounds are generally easy to continue in your home country. You will be given a handover document noting the timing of the next check-up and the target TSH range.

FAQ — Do I definitely need radioactive iodine therapy?

It is not necessary for everyone. It may be omitted if recurrence risk is low, and is considered if risk is moderate or higher. Radioactive iodine therapy uses the property of thyroid cells to absorb iodine in order to eliminate remaining tissue and micro-metastases, and since isolation hospitalization may be required, this is explained together with the stay schedule.

FAQ — Is visa processing time included in the length of stay?

Visa processing time must be calculated separately from the treatment stay. Treatment within 90 days uses the medical tourism visa C-3-3, while longer-term treatment exceeding 90 days and accompanying family members use G-1-10, and processing times vary greatly by country and consulate. If there is a possibility that treatment will exceed 90 days, it is safer to consider a long-term visa from the outset, or to prepare for a status-of-stay change procedure after arrival.

Sources and notes

• This article was written based on content from the Thyroid Cancer Note and the Medical Visa Note (HiKorea, Ministry of Health and Welfare, Medical Korea), with survival rate figures cited from the National Cancer Registry statistics 2019–2023 (Central Cancer Registry, National Cancer Center).
• This content is provided for general medical information purposes only, and diagnosis, treatment methods, and outcomes may vary depending on individual condition. Accurate diagnosis and treatment should always be determined through consultation with medical professionals.