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Flexible Sigmoidoscopy

What is flexible sigmoidoscopy?

A flexible sigmoidoscopy is a shorter procedure that examines the lower part of the bowel (the rectum and sigmoid colon). It is used to investigate symptoms such as rectal bleeding, a change in bowel habit, or to screen for colorectal cancer in lower-risk patients.

The procedure is generally well tolerated without sedation, though sedation is available if preferred. It is often used as a first-line investigation before a full colonoscopy is considered, or as part of a bowel cancer screening programme.

When flexible sigmoidoscopy is used

Flexible sigmoidoscopy examines the rectum and sigmoid colon, the lower part of the large bowel. It is used to investigate rectal bleeding, a change in bowel habit localised to the lower bowel, or as part of bowel cancer screening in selected pathways.

The procedure is generally well tolerated without sedation, though sedation is available if you prefer. It may be used as a first-line investigation before full colonoscopy, or when symptoms and clinical findings suggest the problem lies in the lower bowel.

What to expect

Preparation is simpler than for full colonoscopy and typically involves an enema or limited bowel preparation on the day. The examination takes a shorter time than colonoscopy and usually allows return to normal activity the same day.

If the examination identifies a condition requiring evaluation of the entire colon, such as multiple polyps or unexplained findings, colonoscopy may be arranged. I advise on the most suitable investigation based on your symptoms and clinical assessment.

After the procedure

Findings are discussed with you immediately after the examination. Biopsies can be taken if needed. Follow-up depends on results and may include surveillance or further investigation.

Your consultation

If you have lower bowel symptoms requiring investigation, flexible sigmoidoscopy may be an appropriate first step. Appointments are available through NHS referral and private practice.

Contact my team to arrange a consultation and discuss the most suitable investigation for you.

Frequently asked questions

How do I prepare for a colonoscopy?

You will receive detailed written instructions prior to your procedure. In general, you will be asked to follow a low-residue diet for one to two days beforehand and to take a bowel preparation solution to clear the bowel. You will need to arrange for someone to drive you home following the procedure if sedation is used. Full pre-procedure instructions will be provided by the clinical team.

What happens at my first consultation?

Your first appointment will typically last 30 to 45 minutes. Mr Daulatzai will take a full history, review any relevant investigations, and examine you where appropriate. He will explain your diagnosis and all available treatment options clearly, and involve you fully in any decisions about your care. There is no obligation to proceed with any treatment at the initial consultation.

How quickly can I be seen?

Private patients can typically be seen within one week. Please contact the secretary directly to check current availability.

Mr Najib Daulatzai speaking with a patient during a consultation appointment in London or Hertfordshire

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Consultations are available through NHS and private practice at locations across London and Hertfordshire.