Diagnostic and therapeutic Colonoscopy

Diagnostic and therapeutic Colonoscopy

A colonoscopy is a highly effective, minimally invasive procedure used to examine the lining of the large intestine (colon and rectum). It is considered the gold standard investigation for diagnosing a wide range of colorectal conditions and plays a crucial role in the early detection and prevention of colorectal cancer.

Using a flexible, high-definition camera (colonoscope), the specialist can directly visualise the bowel, identify abnormalities such as polyps, inflammation, or bleeding sources, and perform therapeutic interventions during the same procedure. This includes polyp removal (polypectomy) and targeted biopsies, reducing the need for additional procedures.

Why is a Colonoscopy Recommended?

A colonoscopy may be advised for:

  • Evaluation of rectal bleeding or unexplained anemia
  • Persistent change in bowel habits (diarrhea or constipation)
  • Abdominal pain or unexplained weight loss
  • Screening for colorectal cancer (especially over age 45–50 or with family history)
  • Surveillance in patients with previous polyps or inflammatory bowel disease

Procedure and Patient Experience

Colonoscopy is typically performed under sedation, ensuring patient comfort. The procedure usually takes 20–40 minutes. A thorough bowel preparation is required beforehand to ensure clear visualisation.

Most patients return home the same day, with minimal disruption to routine activities.

Clinical Value

  • Early detection and removal of precancerous polyps
  • Accurate diagnosis of colorectal pathology
  • Avoidance of more invasive surgery in many cases
  • Evidence-based screening tool with proven mortality benefit

FAQs - Colonoscopy

Is colonoscopy painful?

Colonoscopy is generally not painful, as it is performed under sedation. Most patients are comfortable or have minimal discomfort and may not recall the procedure.

Bowel preparation involves taking prescribed laxatives to clear the colon before the procedure. A clean bowel is essential for optimum visualisation facilitating accurate diagnosis. 

Colonoscopy is very safe. Rare risks include bleeding (especially after polyp removal) and perforation. These risks are low when performed by experienced specialists.  As a JAG accredited endoscopist, my colonoscopy numbers are regularly audited along with all relevant key performance indicators.

Yes. By detecting and removing precancerous polyps, colonoscopy significantly reduces the risk of developing colorectal cancer. 

Mr Joshua Franklyn

Mr Joshua Franklyn

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