Flexible Sigmoidoscopy
A flexible sigmoidoscopy is a medical procedure used to examine the lower part of the colon (large intestine) and rectum. The procedure involves using a flexible tube with a camera and light on the end, called a sigmoidoscope, to visualize the inside of the sigmoid colon and rectum.
Purpose
The purpose of a flexible sigmoidoscopy is to:
- Diagnose and monitor conditions such as diverticulitis, inflammatory bowel disease (IBD), and colorectal cancer
- Investigate symptoms such as abdominal pain, diarrhea, constipation, and rectal bleeding
- Screen for colon polyps and cancer in individuals with a family history or other risk factors
Preparation
To prepare for a flexible sigmoidoscopy, patients typically:
- Follow a liquid diet for 1-2 days before the procedure
- Take laxatives or enemas to clear the bowel of stool and gas
- Remove any clothing or jewelry that may interfere with the procedure
Procedure
The flexible sigmoidoscopy procedure typically involves:
- The patient lying on their side or back on an examination table
- The doctor inserting the sigmoidoscope into the rectum and guiding it through the sigmoid colon
- The camera and light on the end of the sigmoidoscope transmitting images to a monitor for the doctor to view
- The doctor inflating the colon with air to get a better view
- The procedure typically taking 10-30 minutes to complete
Risks and Complications
While generally safe, flexible sigmoidoscopy carries some risks and complications, including:
- Bleeding or perforation of the colon
- Infection
- Abdominal pain or cramping
- Dizziness or lightheadedness due to the sedation used during the procedure
After the Procedure
After a flexible sigmoidoscopy, patients may:
- Experience some bloating, gas, or discomfort due to the air used during the procedure
- Be able to resume normal activities and diet immediately after the procedure
- Receive instructions on how to manage any symptoms or complications that may arise
Results
The results of a flexible sigmoidoscopy are typically available immediately after the procedure. The doctor will discuss the findings with the patient, including:
- Any abnormalities or conditions found during the procedure
- Recommendations for further testing or treatment
- A plan for follow-up care and monitoring
Frequently Asked Questions (FAQs)
What is a Flexible Sigmoidoscopy?
A procedure to examine the lower part of the colon and rectum using a flexible tube with a camera.
Why is a Flexible Sigmoidoscopy performed?
To detect and diagnose conditions such as polyps, cancer, and inflammatory bowel disease in the sigmoid colon and rectum.
How long does a Flexible Sigmoidoscopy take?
Typically around 10-15 minutes, but may vary depending on individual circumstances.
Is a Flexible Sigmoidoscopy painful?
Usually not, but some discomfort or cramping may be experienced during the procedure.
Do I need to prepare for a Flexible Sigmoidoscopy?
Yes, typically involves bowel preparation with laxatives or enemas to clear the colon and rectum.
Can I eat before a Flexible Sigmoidoscopy?
Usually no solid food is allowed for a certain period before the procedure, but clear liquids may be permitted.
Will I be sedated during a Flexible Sigmoidoscopy?
Possibly, depending on individual circumstances and medical judgment.
What are the risks of a Flexible Sigmoidoscopy?
Generally low, but may include bleeding, perforation, or infection, among others.
Can I drive after a Flexible Sigmoidoscopy?
Typically not immediately after the procedure if sedation was used, due to potential drowsiness.
How often should I have a Flexible Sigmoidoscopy?
The frequency depends on individual risk factors and medical guidelines, typically every 5-10 years for average-risk adults.
Article last updated on: 18th October 2025.
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