How colorectal cancer is treated in Korea

Outcomes, confirmed by national statistics

For people diagnosed with colorectal cancer in Korea between 2019 and 2023, the 5-year relative survival rate is 75.6%. Over the same period, the 5-year relative survival rate for all cancers combined in Korea is 73.7%. These figures come from the national cancer registry published by the Korea Central Cancer Registry at the National Cancer Center — they are not one hospital's results.

In the US National Cancer Institute's SEER data, the 5-year relative survival rate for colorectal cancer is 65.4% (diagnosed 2016–2022). Much of the difference comes down to when the cancer is found. In Korea, the national screening program offers an annual fecal occult blood test from age 50, and a positive result leads to a colonoscopy, so a higher share of cases are caught at the polyp stage or as early cancer.

For patients coming from abroad, this means two things. Korean medical teams have performed a large volume of colorectal surgery and chemotherapy, and the single biggest factor in your own outcome is your stage. So the first step is to have your stage assessed accurately before you travel.

The treatment path depends on stage and location

Early colorectal cancer confined to the mucosa can often be treated completely by removing it during a colonoscopy, using endoscopic submucosal dissection (ESD). This usually means one or two nights in hospital, and because no part of the bowel is removed, daily life is barely affected.

For colon cancer that has grown into the muscle layer or deeper, the standard approach is resection of the affected segment of bowel together with the nearby lymph nodes, most often laparoscopically. Rectal cancer surgery takes place in the narrow space of the pelvis, so a robotic approach offers clear advantages, and whether the anal sphincter can be preserved is a key decision.

For rectal cancer, chemotherapy and radiation are often given before surgery to shrink the tumor, and stage 3 colon cancer is followed by adjuvant chemotherapy after surgery. Even when the cancer has spread to the liver or lungs, the metastatic sites are removed as well if resection is feasible, and markers such as MSI, RAS, and BRAF guide the choice of targeted and immunotherapy drugs.

What international patients actually pay

Based on the prices hospitals publish for international patients, laparoscopic colon resection runs roughly USD 15,000–25,000, and robotic rectal resection sits above that range. Figures vary by hospital, stage, and length of stay. Endoscopic resection costs considerably less than surgery.

Our estimate breaks out tests, surgery, hospital stay, medication, interpreter services, and accommodation as separate line items. If chemotherapy follows, we list the cost of the first cycle and the expected cost of later cycles separately, and we also tell you whether those cycles can be continued at home. 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

If the cancer is early, is endoscopic resection an option? If it is advanced, is laparoscopic or robotic surgery the better fit? If it is rectal cancer, can the anus be preserved? If there is metastasis, which marker tests are needed? These are the four questions the written opinion answers.

Send us your imaging (CT, MRI), colonoscopy findings and biopsy results, and your diagnosis. Colorectal surgeons and medical oncologists will review them together and give you a written opinion within 5 business days. The opinion comes with three hospitals suited to your case and an estimate.

Frequently asked questions

Do I need to repeat the colonoscopy?

If you have colonoscopy images and biopsy results from the past 6 months, we use them as they are. If you do not have them, or they are older, we perform the test within three days of your arrival and confirm the schedule.

I have rectal cancer — can I avoid a stoma?

It depends on where the tumor sits, how far it is from the anus, and how it responds to chemotherapy and radiation before surgery. At the review stage we state the likelihood of preserving the anus in your written opinion.

Do I have to receive all of my post-surgery chemotherapy in Korea?

No. We can propose starting the first cycle in Korea and continuing the rest at home, or extending your stay in Korea, and we include an estimate for each.

How long a stay should I plan for?

About ten days for endoscopic resection, and 2–3 weeks for laparoscopic or robotic resection. Rectal cancer that needs radiation before surgery adds another 5–6 weeks.

Can I still be treated if the cancer has spread to my liver?

Depending on the number and location of the metastases, we combine liver resection, radiofrequency ablation, and chemotherapy. The written opinion tells you whether resection is possible and in what order treatment would happen.