Gastroenterology

Flexible Sigmoidoscopy

A minimally invasive procedure to examine the rectum and lower colon.

What is Flexible Sigmoidoscopy?

Flexible sigmoidoscopy is a diagnostic procedure used to visualize the rectum and the lower portion of the colon (sigmoid colon). It involves inserting a thin, flexible tube with a camera through the rectum. This test is often performed to screen for colorectal cancer, evaluate rectal bleeding, or diagnose conditions such as diverticulosis and inflammatory bowel disease. Unlike a full colonoscopy, flexible sigmoidoscopy examines only the lower colon, making it shorter and often requiring less preparation.

This procedure helps to:

Screen for colorectal cancer.
Detect and remove small polyps.
Diagnose inflammation, ulcers, or diverticulosis.
Investigate rectal bleeding or changes in bowel habits.
Monitor inflammatory bowel disease in the lower colon.

What to expect after Flexible Sigmoidoscopy?

Preparation is less intensive than colonoscopy, often involving enemas instead of a full bowel prep. Sedation is not always required. After the procedure, mild cramping or bloating may occur, but patients usually recover quickly and can return to normal activities.

Minimal preparation compared to colonoscopy.
Sedation may not be necessary.
Slight cramping or bloating possible afterward.
Patients can often resume daily activities immediately.
Results are available soon after the procedure.

Why is it performed?

To detect early signs of colorectal cancer.
To evaluate unexplained rectal bleeding.
To diagnose and monitor colitis or diverticulosis.
To investigate changes in bowel habits.
To follow up on abnormal stool test results.

Risks and Considerations

Slight risk of bleeding, especially if polyps are removed.
Very rare risk of perforation.
Temporary bloating or discomfort.
Lower diagnostic reach compared to colonoscopy.
Safe and commonly performed in outpatient settings.

Early detection is important for managing the condition and preventing further complications.

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FAQs

How is flexible sigmoidoscopy different from colonoscopy?

It examines only the lower colon, making it shorter and less invasive.

Do I need sedation?

Often no, but it can be used for patient comfort if needed.

How long does it take?

The test usually takes 10–20 minutes.

Can polyps be removed during this test?

Yes, small polyps can often be removed.

How often should I have this test?

For screening purposes, it may be recommended every 5 years, depending on age and risk factors.

Gastroenterology

Doral Health & Wellness Gut Health Department

Doral Health & Wellness Gastroenterology provides comprehensive care for all your digestive health needs. Our expert gastroenterologists diagnose and treat a wide range of conditions, including heartburn, irritable bowel syndrome (IBS), Crohn’s disease, colon cancer and more. We offer advanced procedures, such as endoscopy and colonoscopy, to ensure accurate diagnosis and effective treatment.