Colonoscopy

What a colonoscopy examines

A colonoscopy examines the full length of the large bowel using a flexible camera. It is the most reliable way to investigate rectal bleeding, a lasting change in bowel habit, unexplained anaemia and abdominal pain, and it is the gold standard for bowel cancer screening.

Prevention, not just detection

Most bowel cancers begin as polyps, small growths on the bowel wall that change slowly over years. During a colonoscopy we remove those polyps as we find them, where appropriate, with comfort options discussed beforehand.

That makes colonoscopy unusual among medical tests: it does not just find disease, it prevents it. No scan or stool test can do that.

Preparation

The bowel must be completely empty. That means a low-residue diet for a few days, clear fluids the day before, and a prep solution in the evening that clears you out over several hours.

The preparation is the part most patients find hardest, and we give you full written instructions when you book. Do not cut it short because you feel clean; a half-prepared bowel is how a small polyp gets missed.

On the day

At Zendale, colonoscopy is usually performed without sedation. Optional anaesthesia can be requested for greater comfort, following assessment by the clinical team. You are monitored throughout and may feel pressure, bloating or cramping during the examination.

The team explains your recovery and aftercare before you leave. If you request anaesthesia or receive sedation, arrange an accompanying adult and transport home, and follow the restrictions issued by the clinical team.

Results

We can usually describe what we saw once you are alert. Any polyp removed or biopsy taken goes to the laboratory, and that result follows. Your referring doctor receives a written report with images on the same day, along with advice on when the test should be repeated.