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Doctor insights on: Colonoscopy Vs Flex Sig

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How do a colonoscopy and a sigmoidoscopy differ?

How do a colonoscopy and a sigmoidoscopy differ?

Longer test: A sigmoidoscopy only sees part of the colon. The traditional sigmoidoscopy was 60 centimeters and saw the sigmoid and descending colon. A colonoscope is 120-160cm and should visualize the entire colon. Usually the sigmoidoscopy is done unsedated while the colonoscopy is done with sedation. ...Read more

Dr. John Lappas
544 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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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

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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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What are the differences between sigmoidoscopy prep and colonoscopy prep?

What are the differences between sigmoidoscopy prep and colonoscopy prep?

It is similar: Both procedures require complete cleaning up of the Colorectal area. So the prep is not any different. ...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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I am refusing to have a colonoscopy or sigmoidoscopy unless it becomes my very last resort. What test options can I insist on in UK please possibleibs?

I am sorry: but I don't practice in the UK and I don't know health care policies in Britain. I don't know if Health Tap has any providers in the United Kingdom. All the physicians that I know in Health Tap are based in the United States. ...Read more

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Had colonoscopy 2 yrs ago completely normal if i had diverticulitis now could they just do a sigmoidoscopy if its lower left side near ovary?

Had colonoscopy 2 yrs ago completely normal if i had diverticulitis now could they just do a sigmoidoscopy if its lower left side near ovary?

May not need a scope: If you had a scope 2 years ago you may not need another one at this time. Are you having pain, rectal bleeding?? Did they see diverticulosis on you initial scope? Are they saying you need another scope? ...Read more

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3 mths loose am bowel movements. Flex sig and biopsies normal. Now pregnant so no colonoscopy. I'm trying not to worry; bloods, us normal. Advice?

3 mths loose am bowel movements. Flex sig and biopsies normal. Now pregnant so no colonoscopy. I'm trying not to worry; bloods, us normal. Advice?

Not Ca: Loose BM due to inflammation of bowel, When caused by tumor it progresses as lesion in sigmoid blocks more of bowel. Rt. sided lesions don't cause loose BM. If flex sigmoid scoping neg. there is no bowel lesion causing problem. Best to wait until completion of term if pregnancy present. If symptoms persist colonoscopy then performed. ...Read more

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Can many months of cdif & tx make your colon more likely to perforate from colonoscopy or sigmoidoscopy after its cured (test ok & no sx)?

Can many months of cdif & tx make your colon more likely to perforate from colonoscopy or sigmoidoscopy after its cured (test ok & no sx)?

Depends : An inflamed colon is at higher risk of complications during colonoscopy as it tends to be thicker, more blood flow, and less flexible. If your colon has recovered from for C difficle colitis then your risk is back to normal. If you have been chronically ill and you are malnourished as a result you will have a slightly increased risk as well as a decreased ability to recover from a complication. ...Read more

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Does a sigmoidoscopy hurt? My doctor told me i won’t get any sedation for my sigmoidoscopy, but my friend had sedation for his colonoscopy. Does that mean a sigmoidscopy hurts less?

Less uncomfortable: Different patients have different perceptions of pain. That being said, a sigmoidoscopy is generally less uncomfortable because they insert the instrument not nearly as far as with a colonoscopy. Consequently, they don't have to expand the inside of your colon with as much air during sigmoidoscopy which is generally the uncomfortable part. Sigmoidoscopy is commonly performed without sedation. ...Read more

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I am considering a screening sigmoidoscopy over that of a colonoscopy due to more preparation and procedural involvement. No family history. Wise?

Colonoscopy : I would suggest a colonoscopy if you are able, as it is a more complete screening. If normal you will not need another for 10 years. The sigmoidoscopy only looks at the lower portion of your colon. ...Read more

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Blood mucus frequent loose stools. Had sigmoidoscopy and colonoscopy with adequate view. Should I still be worried and what else can cause this?

Colonoscopy: The best person to determine what is going on is the colonoscopist. Have they not discussed the results of this with you. Usually they will biopsy randomly if there are no definitive points of abnormal mucosa visible. Call and talk to your GI doctor. Best wishes. ...Read more

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Would a sigmoidoscopy show details or info like a colonoscopy and a endoscopy ? Still have bad stomach symptoms. Got a colon and endo done still pain

Would a sigmoidoscopy show details or info like a colonoscopy and a endoscopy ? Still have bad stomach symptoms. Got a colon and endo done still pain

Scopy: of the colon and specially the sigmoid colon and the anus is generally done to rule out lesions of the lower colon specially if there is unexplained abdominal pain or rectal bleeding or change in your bowel movements to rule out lesions like malignancy I am sure you physician is worried about the status of your colon and will then treat your abdominal pain ...Read more

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Can the cecum be seen during a colonoscopy? Or is it through a sigmoidoscopy? Can cancer of the cecum be detected through radiology tests like ct/mri?

Can the cecum be seen during a colonoscopy? Or is it through a sigmoidoscopy? Can cancer of the cecum be detected through radiology tests like ct/mri?

Yes-No-Maybe: Colonoscopy evaluates the entire large intestine, from cecum to rectum. Flexible sigmoidoscopy only goes as far as the left side of the colon, nowhere near the cecum. Routine ct scanning may identify a (large) cecal tumor but is much less sensitive than a colonoscopy; ct colonography is almost as sensitive as a colonoscopy, but is less desirable than colonoscopy since a biopsy cannot be done. ...Read more

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Dr. Charles Cattano
2,024 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