Bowel Health Check with colonoscopy (referral form at the bottom of the page)

Bowel cancer develops through a well defined pathway. Bowel polyps (also called adenomas) can slowly grow over years in the lining (also called mucosa) of your bowels and become cancerous (also called carcinoma). Colonoscopy can remove these pre-cancerous growths and keep you cancer free. It is a very safe procedure where a flexible camera is inserted into your anus to examine your small and large bowel. Prior to your procedure you need to flush your bowels, by drinking bowel preparation and only having clear fluids the day prior to the procedure. Colonoscopy usually takes approximately 30 minutes and you will be given sedation medication to keep you comfortable and asleep.

Cancer Development

Symptoms

Many patients with bowel cancer or large polyps do not experience any symptoms. Depending on the size and the position of the cancer people can experience:

  • Blood in your stool or bleeding from the rectum.
  • Change in your bowel habits, including diarrhea or constipation or a change in the consistency of your stool
  • Abdominal pains, cramping or distention.
  • Fatigue
  • Weightloss
  • A feeling that your bowel doesn't empty completely
  • Anaemia

 

Bowel screening

In new Zealand people between the ages of 65 and 75 are offered screening where stool samples are analysed for traces of blood (FOBT). This program has been very successful and has detected many people who had cancer but no symptoms. Limitations of this test is that 40% of cancers do not bleed and therefore do not get detected by stool testing. 

Frequently Asked Questions (FAQ)

Does it hurt to remove a polyp?

Can I refer myself for a colonoscopy?

Do I need a colonoscopy if I have had a negative bowel screening test

How often do you find polyps?

How long is the wait time for colonoscopy?

How much does a colonoscopy cost?

Self Referral Form

Please fill out the form below and one of my staff will contact you within the next business day to discuss and find a convenient time for the procedure.

 

 

Clinic Web

Clinic Appointment

Or if you prefer you can see me in clinic first to discuss your options and create a treatment plan. You can use this form to refer yourself for a clinic appointment instead.

 

 

5 out of 5 stars
posted 3 months ago

Dr. Van Rijnsoever is an excellent Gastroenterologist and Highly recommended. He was very helpful and provided me all with all the information I needed as well referrals, the procedure and reports for immigration. I would definitely refer anyone to him. 5 STARS!

5 out of 5 stars
posted 4 weeks ago

My son Liam has been under the care of Marius for most of this year with some complex issues which are now resolved. Marius was extremely knowledgeable and professional in his care throughout this process, while offering a kind and empathetic approach to both myself and Liam . I would thoroughly recommend him to anyone seeking the services of a Gastroenterologist.

5 out of 5 stars
posted 5 months ago

Dr Marius was very attentive and responded fully to my description of my state of health (physically and psychologically/emotionally). He was able to provide me with relevant information to assist me in moving forward, and made referrals to ensure that anything needing to be checked could be checked. Matthew Connolly

5 out of 5 stars
posted 3 months ago

I suffer from Eosinophilic esophagitis, & Marius has been the most qualified surgeon that I have ever had doing the procedure of GI endoscopy. He is very informative. About the only person I would trust to do a Endoscopy procedure correctly & safely. I very much recommend, hence 5 stars.

5 out of 5 stars
posted 4 weeks ago

Fantastic, knowledgeable and highly communicative Doctor.