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

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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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?

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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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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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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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

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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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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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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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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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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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What is a colonoscopy?

What is a colonoscopy?

Look inside colon: You are sedated (very sleepy, but still breathing on your own). The endoscopist places an instrument through your anus and then passes it into the colon to carefully exam the colon for polyps, cancer, etc. If any abnormalities are found a biopsy may be done. Typically, it is painless - the only bother is cleaning out your bowels beforehand and even that's not so bad. ...Read more

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Do colonoscopies hurt?

No: Colonoscopy is usually performed with some form of sedation and if done correctly you should not feel anything or remember anything. ...Read more

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What is a colonoscopy like?

A simple test: After appropriate colon preparation at home, arrive at the endoscopy center, change into a gown & IV is inserted. Once in the procedure room, final consent is obtained, IV sedation is given (there are options here--some patients choose no sedation, others want to be "out cold"), & a thin flexible tube with video camera is inserted per rectum & advanced, taking pictures, biopsies, & therapeutics. ...Read more

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How to prep for a colonoscopy?

Lots of options: There are a lot of different regimens for doing a colonoscopy prep. It depends on your gastroenterologist what they prefer. Ultimate what they want is a clean prep, so you should not have any stool in your colon when they look. You will have a sense of whether your prep is complete when you look in the toilet bowl and you shouldn't see any solid material left. ...Read more

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What results from colonoscopy?

Colonoscopy: This is a good screening tool used for the appropriate age group in screening for colon cancer. ...Read more

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Do I really need a colonoscopy?

Age: When either 45 or 50 yrs old or of bleeding or other symptoms also pending family history. ...Read more

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Colonoscopy: what can I expect?

Not bad: The most annoying part is the bowel cleanout the day before. You have to drink a fluid that makes you have enough bowel movements until your stool becomes clear. The colonoscopy procedure itself is usually easy. When you go home you will have some abdominal discomfort and bloating. Sometimes you can have a little rectal bleeding as well. ...Read more

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What may appear in a colonoscopy?

Pretty much anything: Colonoscopies are mostly done for screening, looking for polyps which may be pre-cancerous, thus removing them in essence prevents a cancer. Colonoscopies are also done to evaluate for other problems, like diverticulosis, hemorrhoid bleeding, changes in bowels which may be from comparatively benign conditions, but infectious diseases, inflammatory diseases and other colon problems may be found too. ...Read more

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When should I start colonoscopies?

When should I start colonoscopies?

50 unless...: The general guideline is age 50, but there are exceptions to that rule. For example, family history of colon cancer can move up the schedule. ...Read more

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How can you die from a colonoscopy?

How can you die from a colonoscopy?

Unlikely: Dying during a colonoscopy or because of one is a very rare event. The risk of a perforation or hole during a colonoscopy is about 1/1500. The risks of dying would increase if one had a perforation that was not noticed. Also there is a risk of having complications from the sedation. One could stop breathing from over sedation which could lead to death, again, a rare event. ...Read more

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No pain, why would i need a colonoscopy?

No pain, why would i need a colonoscopy?

Screening: screening for colon cancer. cancer usually does not give symptoms until it is a large tumor that has spread to other organs. At that point you would start having symptoms, but survival after treatment would be significantly reduced. ...Read more

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How often should you have a colonoscopy?

It depends on indica: If it is for screening for colon cancer, then once every 10 years is considered adequate but it can be done more often if there is an abnormality that requires close monitoring. ...Read more

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Petrified of colonoscopy please help :(?

Petrified of colonoscopy please help :(?

Low risk: Bleeding and perforation are indeed risks however combine risk in the hands of an experienced endoscopist is probably less than 1%, so it is safe and by far the most efficient test for polyps/cancer of the colon as it is both diagnostic and therapeutic, which none of the alternative exams are. It is usually done with sedation so you should not feel or remember anything about the procedure. ...Read more

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Should someone get a fobt or colonoscopy?

No: None of the screening tests for serum tumor markers or fecal occult blood are that accurate. At least with colonoscopy every few years there is direct visualization of the bowel to define the absence or presence of a tumor or polypoid lesion. A new diagnostic fecal tumor protein test is being developed that will define the amt. of tumor protein or not present and if neg. the bowel is neg. ...Read more

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Colonoscopy robs your dignity, is that true?

Colon cancer can: Not colonoscopy. You are asleep and everyone is there to make you comfortable in a difficult but manageable situation. ...Read more

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What to expect from a colonoscopy(spelling)?

Information: Colonoscopy provides information about the state of health of your colon. The only uncomfortable part is the cleansing done the day before which will require regular trips to the bathroom.L on the day of the procedure you will be sedated and when you wake up there will be no symptoms; your GI doctor will give you the results. ...Read more

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What does it feel like to have a colonoscopy?

What does it feel like to have a colonoscopy?

Quite variable: Unless you opt not to have conscious sedation, you'll probably remember and feel little during the actual colonoscopy. Afterwards, you'll like have some element of mild abdominal discomfort and bloating related to residual gas in the colon. It may take several days for your bowel habit to return to normal after the aggressive clean out necessary prior to the colonoscopy. ...Read more

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Prepping for colonoscopy -- what can I expect?

Lots of diarrhea: There will be some cramping and lots of diarrhea. I like to see the bowel prep looking like "mountain dew" and not "yoo hoo". ...Read more

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What if the colonoscopy shows something abnormal?

Diagnosis/treatment: At colonoscopy most visible abnormalities are either definitively diagnosed via sampling (biopsy) or removed completely also for diagnosis that includes the treatment. Some findings, eg cancer, need definitive treatment via other modes (for example but not limited to surgery). ...Read more

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Dr. Kristi Moffat
133 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
2,047 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