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Doctor insights on: Show Me How A Colonoscopy Is Performed

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Gastro recommended CT and colonscopy for mild abdominal pain/gas. 23 yrs old. If CT scan shows nothing, is colonoscopy necessary? no bloody stools

Gastro recommended CT and colonscopy for mild abdominal pain/gas. 23 yrs old. If CT scan shows nothing, is colonoscopy necessary? no bloody stools

Options available: CT scan of the abdomen may be indicated but not for mild pain alone. If the symptoms are progressive and there is concern for Cancer(unlikely in your age group), then only I would consider doing a CT. Similarly Colonoscopy is not indicated because of pain alone.If there is bowel irregularity or blood in stool Colonoscopy is reasonable to do. In your case I would watch /monitor for 4-6 weeks, then ...Read more

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Dr. Charles Cattano
2,028 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


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Will a barium test show all of the stool in the small and large intestines? Is it typical to have one performed weeks before the first colonoscopy?

Will a barium test show all of the stool in the small and large intestines? Is it typical to have one performed weeks before the first colonoscopy?

No and no: Barium is a contrast agent which helps the visualization of the bowel during X-ray studies. When given as an enema, it helps for large bowel(colon) examination.Orally, it can help for small bowel evaluation. Neither route is useful for imaging BOTH large and small bowel.If the patient has taken proper bowel preparation measures, there is in fact no stool in the bowel to degrade the visualization. ...Read more

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How is a colonoscopy performed?

How is a colonoscopy performed?

Camera on a snake: A video camera on the end of a flexible stalk, not unlike a snake, is inserted through the rectum while you are asleep. You don't feel a thing, you won't remember it, and the only bed part is the prep. ...Read more

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What if the colonoscopy shows something abnormal?

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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Why does colonoscopy test show a blockage?

Why does colonoscopy test show a blockage?

Cancer/ inflammation: Both cancer and noncancerous inflammatory conditions like diverticulitis can cause obstruction of the colon and symptoms associated with that obstruction. During colonoscopy, the obstruction will not allow the colon to distend properly allowing the operator to visualize the problem and biopsy any abnormality. ...Read more

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If colonoscopy and endoscopy show nothing what could it be?

If colonoscopy and endoscopy show nothing what could it be?

What symptoms?: Impossible to say without knowing what signs and symptoms you were having that prompt getting the scopes. ...Read more

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If I'm not in a flare will the colonoscopy still show signs of Crohn's disease?

If I'm not in a flare will the colonoscopy still show signs of Crohn's disease?

Usually No!: Like other medical tests, only what is present at the moment, within the limits of accuracy of the test, may be revealed. Additionally, the range of what is considered "normal" is huge. Eg for most quantitative measurements the central 96% of the range (compared to a small & unspecified group of people measured at some time in the past) is considered "normal". Studying the issues yourself is Best ...Read more

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Can i tell me if I am being tested for Crohn's and i are feeling well before a colonoscopy will it still show up?

Yes in theory: In theory, if you truly have Crohn's disease and you happen to feel well on the day of the procedure, it will definitely show up on pathology. That is because Crohn's disease is CHRONIC inflammation. It can't disappear over night. Even if you are on the right treatment and are starting to feel better it takes weeks to months for all the inflammation to resolve. Good luck! ...Read more

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Can you tell me if i'm being tested for Crohn's and I am feeling well before a colonoscopy will it still show up?

Chron's Diagnosis: Although colonoscopy is usually most useful when you are having symptoms related to crohn's flare, colonoscopy exam can be helpful in diagnosing various aspects (e.g. Stricture, cancer, etc. ) of disease even when feeling well. http://www.laendo.net/english/inflammatory-bowel-disease-88079022. ...Read more

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Why are colonoscopy performed years apart? Shouldn't they be more often? Doesn't cancer grow fast?

Why are colonoscopy performed years apart? Shouldn't they be more often? Doesn't cancer grow fast?

Good question: Most colon cancer differs from other cancers in that it tends to progress in a very predictable pattern beginning as polyps that can sometimes form cancer. This process takes many years. For example, it can take 5 or more years for a polyp to reach 1 cm and then another 5 or more yrs for the 1 cm polyp to become cancer. This is why the standard recommendation is to have a colonoscopy every 10 yrs. ...Read more

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Is weight gain normal after colonoscopy ? I had procedure yesterday and today the scale shows I've gained 3 lbs

Is weight gain normal after colonoscopy ? I had procedure yesterday and today the scale shows I've gained 3 lbs

Unlikely, but . . .: Prior to colonoscopy, one has to drink lots of icky fluids to clean out bowel. As a result, one usually loses weight. OTOH 3# weight gain in one day could be from bloating unrelated to procedure. Or more likely, use of different scales at different times of day in different amounts of clothing. Be sure to pay more attention to how your clothes fit than actual weight (using same scale at same time) ...Read more

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I had a colonoscopy last week, which came back clear, however on my report it shows that 40 biopsies were taken from the rectum to the terminal ileum?

I had a colonoscopy last week, which came back clear, however on my report it shows that 40 biopsies were taken from the rectum to the terminal ileum?

Depends: Why was the colonoscopy done? If it was as monitoring for inflammatory bowel disease, then the biopsies were appropriate. Give it a week or so and check with your doctor about the results of the biopsies. Wish you good health and a Happy New Year! ...Read more

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Will Crohn's disease show on a colonoscopy if you feel fine now (remission)?

Will Crohn's disease show on a colonoscopy if you feel fine now (remission)?

It could ....: This is why it is important to have surveillance colonoscopies done on the recommended schedule. Even if you are having no symptoms and feeling fine, it is necessary to document that "grossly and histologically" healing has taken place. This means to check how the bowel looks through the scope and to take biopsies to review under the microscope. If not healed completely, complications can occur. ...Read more

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Please tell me, could a colonoscopy show difference between prolapsed rectum and hemmrhoids?

Not very useful: Rectal prolapse when the last portion of the large intestine protrudes through the anus. Hemorrhoids are swollen blood vessels that develop in the anus and lower rectum. Early rectal prolapse can mimic internal hemorrhoids making it difficult to tell these. Probably best test is to have a colorectal surgeon conduct exam by bearing down to show the prolapse. Protoscopy and colonoscopy may help. ...Read more