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Doctor insights on: Flexible Sigmoidoscopy Vs Colonoscopy

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Please tell me about flexible sigmoidoscopy and colonoscopy ?

Please tell me about flexible sigmoidoscopy and colonoscopy ?

Two separate procedu: These are two separate procedures for checking the large intestine. Sigmoidoscope is shorter and can look inside about one half of the( lower) colon. Colonoscopy is done with a colonoscope, which is much longer and can go up all the way into the entire colon and check it out for any internal disease of the colon like cancer or polyps. ...Read more

Dr. John Lappas
536 doctors shared insights

Sigmoidoscopy (Definition)

Sigmoidoscopy is the use of a flexible fiberoptic camera or specially designed scope to examine the inside of the colon. Because the procedure only examines the left side of the colon (in an area called the sigmoid), it is termed sigmoidoscopy. This is to differentiate it from a colonoscopy, where the entire right and left side of the colon is examined. A sigmoidoscopy ...Read more


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Why is a flexible sigmoidoscopy done instead of a colonoscopy?

Why is a flexible sigmoidoscopy done instead of a colonoscopy?

Screening: A flex-sig is usually done in the office as a preliminary screening procedure. It is also useful as a follow-up if you have had polyps removed in the lower colon. Is is also useful to re-evaluate colitis and you response to treatment. ...Read more

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What is it like to have a flexible sigmoidoscopy or a colonoscopy ?

Depends!: Very few physicians perform sigmoidoscopy anymore (only checks half the colon and no sedation!). Colonoscopy is usually done with sedation or anesthesia. The procedure itself is usually not uncomfortable. The cleaning out preparation can be arduous. Colonoscopy is 50 times more life saving than a mammogram! ...Read more

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Can you tell me about having a flexible sigmoidoscopy or a colonoscopy ?

Both look at: The lower colon but the colonoscopy looks at the entire colon. Preps are different, colonoscopy usually requires sedation and thus someone to drive home, but flex sig can be done in office without sedation and you can resume normal activity right away. Indication are different for each so it depends on the reason you are having the exam in the first place. ...Read more

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How does the cost of a flexible sigmoidoscopy compare to that of a colonoscopy?

Cost: This is variable. Would contact the facility or provider to obtain more information about the anticipated cost. ...Read more

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What is a flexible sigmoidoscopy?

What is a flexible sigmoidoscopy?

A colon exam: This is a limited exam of the distal colon and rectum, typically done without sedation in an office setting. This has been used as part of colon cancer screening regimens, but has been largely replaced by colonoscopy which allows a complete colon exam. ...Read more

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What does a flexible sigmoidoscopy involve?

Camera: You get a camera inserted through your rectum to examine the rectum and the sigmoid colon. You may or may not be offered anesthesia for this procedure. You need to at least have an enema before the procedure to cleanse the colon, and sometimes a laxatives preparation the day before. ...Read more

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What if the flexible sigmoidoscopy shows something abnormal?

What if the flexible sigmoidoscopy shows something abnormal?

Depends on findings: Flexible sigmoidoscopy looks at lower 1/3 of colon. Better look is with colonoscopy, which looks at entirety of colon. In general, if abnormality seen on flex sig, colonoscopy is recommended. ...Read more

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What is the difference between a flexible sigmoidoscopy and an endoscopy?

Flex sig is: a type of endoscopy, but generally flex sig looks at the lower third of your colon, an office procedure, and endoscopy usually implies looking down your esophagus into stomach and first portion of small bowel and usually requires outpatient facility and sedation ...Read more

Dr. Kristi Moffat
127 doctors shared insights

Proctosigmoidoscopy (Definition)

Proctosigmoidoscopy is an examination of the rectum and sigmoid colon (just above the rectum) using a narrow, rigid scope with a built-in light. A small amount of air is usually introduced to distend the bowel, allowing for a better view. Generally, a limited prep is helpful, but not always necessary. ...Read more


Dr. Charles Cattano
1,990 doctors shared insights

Colonoscopy (Definition)

Colonoscopy is the procedure of using a long flexible camera to visualize the entire colon from the inside with the option to take pictures, video, perform biopsies, remove polyps, etc. Generally people are sedated and do ...Read more