Colorectal Cancer Screening in Seomyeon, Busan
Colorectal cancer screening checks people without symptoms for bowel cancer and the polyps that can lead to it. In Seomyeon, the two main options are a fecal immunochemical test (FIT), a simple at-home stool sample, and colonoscopy, which examines the whole colon and removes polyps in the same session. Screening typically starts around age 45–50, earlier with a family history.
Independent patient guide · Medically informative, not a substitute for a doctor's advice · Last reviewed:
What is colorectal cancer screening?
Colorectal cancer usually develops slowly from polyps over many years, often without symptoms until it is advanced. Screening aims to find polyps and early cancers when treatment is simplest. Two approaches are common in Korea: the FIT stool test, which detects tiny amounts of blood, and colonoscopy, which directly examines the bowel. Korean screening commonly starts with FIT from age 50, followed by colonoscopy if positive, while many people opt for colonoscopy directly.
Who is it for?
- Average-risk adults from around 45–50
- People with a parent, sibling or child diagnosed with colorectal cancer or advanced polyps, who usually start earlier
- Those with previous polyps, inflammatory bowel disease, or inherited syndromes such as Lynch syndrome, who need surveillance rather than routine screening
Screening is for people without symptoms. Rectal bleeding, a lasting change in bowel habit, anemia or weight loss call for diagnostic colonoscopy rather than a stool test.
What happens at the clinic
- Risk discussion: the doctor reviews age, family history and previous tests to recommend FIT or colonoscopy.
- FIT route: you collect a small stool sample at home with a kit and return it; results usually take a few days.
- Colonoscopy route: you follow a low-residue diet and bowel prep, then have a sedated exam of about 20–40 minutes.
- Polyp management: polyps are removed during colonoscopy and sent for analysis.
- Next steps: the doctor sets your next screening date based on results.
After screening
FIT has no recovery time. After colonoscopy, expect some bloating, and do not drive after sedation. If polyps were removed, follow the clinic's advice on diet, alcohol and activity for a few days.
Risks and limitations
FIT is risk-free but can miss polyps and some cancers, which is why it is repeated regularly; a positive result does not mean cancer but must be followed by colonoscopy. Colonoscopy is more accurate but carries small risks of bleeding, perforation and sedation reactions, and depends on good bowel preparation.
Choosing a clinic for colorectal screening in Seomyeon
- Ask which option the doctor recommends for your risk and why.
- For colonoscopy, ask about the clinic's bowel prep options and polyp removal policy.
- Ask how results and pathology are explained, and whether you receive images.
- If you have a family history, ask whether genetic counselling or earlier screening is appropriate.
- Check whether combining with gastroscopy under one sedation is possible.
Making it convenient
Many people book colonoscopy and gastroscopy together on a weekday morning. Seomyeon's clinics are a short metro ride from most of Busan, and you should plan transport home after sedation.
Key facts
- Options: fecal immunochemical test (FIT) or colonoscopy
- Typical start: around 45–50 for average risk; earlier with family history
- FIT: stool sample at home, usually repeated every 1–2 years
- Colonoscopy: often every 5–10 years if normal
- Positive FIT: requires follow-up colonoscopy
- Prevention: polyp removal during colonoscopy reduces cancer risk
Frequently asked questions
When should I start colorectal cancer screening?
Most average-risk adults start around age 45 to 50. If a close relative had colorectal cancer or advanced polyps, screening often begins earlier, sometimes at 40 or ten years before the relative's age at diagnosis.
FIT vs colonoscopy: which is better?
Colonoscopy is more accurate and can remove polyps immediately, but needs bowel prep and usually sedation. FIT is simple and non-invasive but must be repeated regularly and requires colonoscopy if positive. The best test is the one you will actually complete.
What happens if my stool test is positive?
A positive FIT means blood was detected, which can come from polyps, hemorrhoids or other causes as well as cancer. You will need a colonoscopy to find the source.
How often do I need a colonoscopy?
If your colonoscopy is normal and you are at average risk, the next is often in 5 to 10 years. Finding polyps usually shortens the interval.
Can I screen for colon cancer with a blood test?
Blood-based tests exist in some countries but are generally less sensitive for polyps than colonoscopy or FIT. Tumour marker blood tests like CEA are not recommended for screening.
Medical disclaimer: Seomyeon.Clinic is an independent information directory. Content is for general education and does not replace a consultation with a licensed physician. Suitability, risks, results and costs vary by person and clinic. In an emergency in Korea, call 119.