Most Common Conditions Determined by Colonoscopy

A colonoscopy is a procedure that allows a colorectal specialist to examine the inside of the colon and rectum using a thin, flexible tube with a camera. This procedure is often recommended when symptoms such as bleeding, changes in bowel habits, or unexplained abdominal discomfort occur.

For patients searching for a colonoscopy doctor in Singapore, understanding what conditions can be identified through this procedure may help clarify its role in diagnosis and treatment planning.

What Conditions Can a Colonoscopy Detect?

A colonoscopy is not only useful for diagnosing colorectal cancer but also for detecting a wide range of conditions that affect the colon and rectum. By allowing direct visualisation of the bowel lining, this procedure helps specialists identify abnormalities early and initiate the most appropriate treatment.

Colorectal Cancer

Colonoscopy is one of the most effective tools for detecting colorectal cancer, one of the most common cancers in Singapore. It enables doctors to spot suspicious growths, polyps or lesions and take biopsies for confirmation. Early detection is critical, as it allows for timely treatment planning and better outcomes.

Colorectal Polyps

Polyps are small growths on the lining of the colon or rectum. While many are harmless, certain types—such as adenomas—can develop into cancer over time. Colonoscopy allows doctors to detect and remove polyps during the same procedure, helping to prevent progression to colorectal cancer.

Inflammatory Bowel Disease (IBD)

Conditions like Crohn’s disease and ulcerative colitis cause chronic inflammation of the digestive tract. Colonoscopy provides clear visual evidence of inflammation, ulcers, or bleeding, and also allows for tissue sampling to confirm the diagnosis and guide treatment.

Diverticular Disease

Diverticular disease occurs when small pouches, known as diverticula, form in the colon wall. These pouches can become inflamed or infected, leading to diverticulitis. Colonoscopy helps confirm their presence and assess the extent of the disease.

Haemorrhoids and Other Anal Conditions

Although haemorrhoids, anal fissures, and anal fistulas are often diagnosed through external examination, colonoscopy may be recommended when rectal bleeding or overlapping symptoms require further investigation.

Dr Ho Kok Sun, 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.

If you are experiencing symptoms such as changes in bowel habits, rectal bleeding, or persistent abdominal discomfort, it is important to seek timely evaluation. A colonoscopy is a reliable procedure for detecting a wide range of colorectal conditions—from benign issues like haemorrhoids and diverticular disease to more serious concerns such as colorectal cancer.

Patients are encouraged to visit a colonoscopy clinic in Singapore to discuss their symptoms and determine whether a colonoscopy is the right step for their care. Taking action early can make a significant difference in protecting your long-term colorectal health.