What is a Colonoscopy?
A colonoscopy is primarily used as a screening and diagnostic method to prevent and detect colorectal cancer.
How Does a Colonoscopy Work?
A colonoscope is a long, thin and flexible tube that is connected to a small light source and camera at the end of the tube.
With the patient being sedated, the colonoscope is gently inserted through the anus and threaded through the entire length of the colon, transmitting real-time images that are projected onto an external screen that doctors can see.
Through these images, doctors will be able to clearly examine the internal lining of the patient’s colon and rectum, looking out for the presence of any abnormalities (such as polyps) along the way.
What Happens When a Polyp is Found?
You might be worried knowing that a polyp has been found in your colon. Not to worry, because:
- Polyps can be easily removed on the spot during a colonoscopy
- Most polyps are harmless (a minority, however, may develop into colon cancer over time)
- Once the polyp is removed, it will be sent to a lab (biopsy) to determine its nature – whether it is benign or pre-cancerous.
If a polyp is found, it is immediately removed so there is no chance for it to even turn into cancer. Your doctor will also recommend a personalised screening plan for you moving forward.
When Do I Need to Get Screened?
If your results come back clear, you will only need to go for a follow-up screening after at least 5 to even 10 years’ time.
Regardless, your doctor will be in the best position to advise you on whether you are due for a colonoscopy, and what your screening schedule should be.
Colonoscopies are a painless and quick procedure that can yield highly accurate and potentially life-saving outcomes, so find out from a doctor if you are already due for one.