Can a Colonoscopy Screening Help Prevent Colon Cancer?

Colonoscopy remains one of the most effective ways to safeguard colon health. The procedure not only detects early signs of colon cancer but also allows doctors to remove pre-cancerous polyps before they progress. Adenomatous polyps, in particular, carry a higher risk of developing into cancer if left untreated. By identifying and removing these growths during routine screenings, colonoscopy significantly lowers the chance of cancer progression and supports long-term colon health.

How Does Colonoscopy Screening Work?

A colonoscopy is a medical procedure that uses a long, flexible tube with a tiny camera at its tip (called a colonoscope) to examine the inner lining of the colon and rectum. During the procedure, the doctor can identify polyps or abnormal growths, detect inflammation or other irregularities, and take tissue samples (biopsies) for further analysis. Importantly, polyps can often be removed on the spot, reducing the risk of them developing into cancer later on.

Who Should Consider Colonoscopy Screening?

Colonoscopy screening is an important preventive step for those at risk of colon cancer or related conditions. It is generally recommended for:

• Individuals aged 50 and above: Routine screening helps detect polyps or early cancer, even in the absence of symptoms.
• Those with a family history of colon cancer or polyps: Having close relatives with these conditions increases your risk, making earlier and more frequent screening advisable.
• People with inflammatory bowel disease: Conditions such as Crohn’s disease or ulcerative colitis are linked to a higher risk of colorectal cancer, warranting closer monitoring.
• Individuals with concerning symptoms: Persistent changes in bowel habits, blood in stool or unexplained weight loss should always prompt timely evaluation.

Since risk levels vary from person to person, consulting a colorectal specialist is the best way to determine the most appropriate screening schedule for your needs.

Preparing for a Colonoscopy

Proper preparation is crucial to ensure a clear view of the colon and accurate results. This process typically involves:

• Dietary Restrictions

  : Patients are advised to follow a special diet, often avoiding solid foods and consuming only clear liquids in the day or two before the procedure.

• Bowel Cleansing

  : Prescribed laxative solutions are taken to fully empty the colon, allowing the doctor to detect even small polyps or abnormalities.

• Medication Adjustments

  : Certain medicines, such as blood thinners or diabetes medications, may need to be paused or modified under your doctor’s guidance.

Your colorectal specialist will provide detailed, step-by-step instructions tailored to your health needs. Following these carefully is key to a safe and effective colonoscopy.

After the Colonoscopy

After a colonoscopy, it is normal to feel a little drowsy from sedation and to experience mild bloating or cramping. Most people recover quickly and can resume their usual routine within a day. Knowing what to expect and how to care for yourself after the procedure can make recovery smoother and more comfortable.

Recovery Period

A short recovery time is needed after the procedure, mainly because sedation is used. Patients are usually observed for a brief period at the clinic before being discharged. It is also advisable to arrange for someone to accompany you home after.

Possible Side Effects

Mild bloating, cramping, or gas may occur after a colonoscopy, but these symptoms typically resolve within a few hours. Serious complications are rare. However, if you develop persistent pain, fever or heavy rectal bleeding, it is important to contact your doctor immediately.

Review of Findings

Your specialist will discuss the results of your colonoscopy, explain whether any abnormalities were found, and recommend follow-up screenings or treatments if needed.

Our Colorectal Specialist in Singapore

Dr Ho Kok Sun is a consultant colorectal & general surgeon in Singapore. He graduated from the National University of Singapore in 1993, obtained his Master of Medicine in Surgery in 1998 and became a Fellow of the Royal College of Surgeons of Edinburgh the same year. After completing specialist training in General Surgery in 2002, he pursued a fellowship at the Cleveland Clinic Florida and has since subspecialised in colorectal surgery. His areas of clinical interest include laparoscopic colorectal surgery, therapeutic endoscopy such as colonoscopy, and the management of anal conditions.

Take proactive steps to maintain your colon health and reduce your cancer risk. Schedule a colonoscopy consultation with Dr Ho Kok Sun today.