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Doctor insights on: Colon Scan Vs Colonoscopy

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Is a pet scan used for colon cancer detection instead of a colonoscopy?

Is a pet scan used for colon cancer detection instead of a colonoscopy?

No: Pet scans are used for staging cancer (assess if it has spread to other tissues), not for screening. ...Read more

Dr. Creighton Wright
13 Doctors shared insights

Colon (Definition)

The colon is another term for the large intestine. This is the final portion of the digestive system, responsible for absorbing water and storing stool before evacuation. It is divided into sections described as cecum; ascending, transverse, descending and ...Read more


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Could I have a pet scan to check for colon cancer instead of having a colonoscopy?

Could I have a pet scan to check for colon cancer instead of having a colonoscopy?

I agree, No: Pet-ct scans are typically used after a diagnosis of cancer to look for other spread of the tumor. If you are looking for an alternative to routine colonoscopy, ct-colonography or virtual colonoscopy is an option. This still involves a bowel prep but requires no sedation. If something is found, you may still need a colonoscopy. Insurance companies are not quite on-board paying for this as yet. ...Read more

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I c a specialist for chrones im experiencing abdominal pain dr done colonoscopy scan of rectum n lower colon can't find answers he said any suggestions?

I c a specialist for chrones im experiencing abdominal pain dr done colonoscopy scan of rectum n lower colon can't find answers he said any suggestions?

Needs evaluation: There should be minimal pain after a colonoscopy. Depending on when the study was done would dictate degree of concern. Also if there is any rectal bleeding, nausea and vomiting and fever. While it is extremely uncommon, there is always the possibility of damage to the colon ranging from simple local irritation to perforation. ...Read more

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Does a CT scan detects colon cancer? Or colonoscopy should be done?

Does a CT scan detects colon cancer? Or colonoscopy should be done?

? Early detection tes: CT scan is not a good Test for early detection of Colon Cancer, so Colonoscopy is the preferred test because it accomplishes 2 objectives...detect polyps/precursors of colon cancer and remove them at the same time which eliminates the risk of Polyps changing into cancer. If you have difficulty with having Colonoscopy, then you should ask your doctor to suggest some alternative tests for checking. ...Read more

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Diagnosed with a "tortuous colon" via oral barium CT scan & colonoscopy; have very distended abbdomen, pain, etc. What to do?

Diagnosed with a "tortuous colon" via oral barium CT scan & colonoscopy; have very distended abbdomen, pain, etc. What to do?

High fiber diet: The elongated colon may need help from a high fiber diet. Avoiding foods and medications that cause constipation is also important. Ask your doctor if there are other issues that may need to be addressed, as the tortuous colon may not be the explanation for your current complaints. ...Read more

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Can I be screened for colon cancer with a CT scan instead of a colonoscopy?

Can I be screened for colon cancer with a CT scan instead of a colonoscopy?

Sometimes: Ct colography is never meant to replace a colonoscopy. At high volumn centers, the detection sensitivity of ct exam is indeed comparable to colonoscopy but you need to know the rate of detection of your imaging facility. Bowel prep is required for both procedures - no way around the unpleasant process. Beware that there is significant radiation exposure with the exam. ...Read more

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Can neuroendocrine tumors occur outside of the colon in setting of CT & Octreotide scan showing in cecum but colonoscopy shows nothing in this area?

Can neuroendocrine tumors occur outside of the colon in setting of CT & Octreotide scan showing in cecum but colonoscopy shows nothing in this area?

Tumors and HTN: 40 F asks: Can neuroendocrine tumors occur outside of the colon in setting of CT & Octreotide scan showing in cecum but colonoscopy shows nothing in this area? ANS: Yes but these diseases are very rare and variable recommend you see a team that specializes it in your area one of the best is in Houston at the big cancer center. ...Read more

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Would advanced colon cancer show up on a CT scan of my abdomen? Reg CT scan not virtual colonoscopy.

Would advanced colon cancer show up on a CT scan of my abdomen? Reg CT scan not virtual colonoscopy.

Imaging/biopsy: The imaging modality of ct scan could show findings that would be concerning for cancer, mass around your colon, enlarged lymph nodes in the same area. However, the diagnosis is made at biopsy, a piece of the mass under the microscope of a pathologist. Often the ct scan leads to the biopsy. Good luck, it is important to get the evaluation completed. ...Read more

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Surgeon says colon doesn't look right on ct scan. Need colonoscopy for more answers. Have diverticulitis with bowel thickening. No symptons.

Surgeon says colon doesn't look right on ct scan. Need colonoscopy for more answers. Have diverticulitis with bowel thickening. No symptons.

Particular question?: Concerns would be why it is inflamed. Infection and autoimmune diseases are some of the possibilites that can only be well answered by colonscopy. ...Read more

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Chance of developing colon cancer 20 months after colonoscopy removal 5mm polyp removed. Having ct scan with and without contrast for left quad pain?

Chance of developing colon cancer 20 months after colonoscopy removal 5mm polyp removed. Having ct scan with and without contrast for left quad pain?

See below: If the colonoscopy was done properly, you are very unlikely to have colon cancer 20 months after the procedure.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex. ...Read more

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I did a CT scan came back negative for diverticulitis but showed a narrowing of the colon. 3cm. Other organs are ok. Does it mean I have colon cancer? I have no blood in stool but I had two episode of complete blockage with vomiting. Colonoscopy next

Colonoscopy: Colonoscopy, that you planning, should settle the issue.
Wish you good health!
Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex. ...Read more

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How much of the colon is examined during a colonoscopy?

How much of the colon is examined during a colonoscopy?

All of it!: The intention with colonoscopy is to examine the entire length of the colon. Sometimes due to tortuosity (or twisty-ness), it is difficult or impossible to see the entire colon. Other ways to evaluate the colon include virtual colonoscopy and barium enema. The advantage of colonoscopy is if anything is found, it can be biopsied or removed often times right away. ...Read more

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Sometimes I have a very strong pain near the end of the colon. Colonoscopy and ecography negative. I had vph in the past. What can I do?

May need a CRS eval: Seems like the GI doc has already ruled out colonic issues. You may have what they call rectal spasms. There are treatments for this to ease the discomfort. Head back to your pcp to discuss, but they may refer you to a crs, also know as a colorectal surgeon. They can make further recommendations if needed. Take care! ...Read more

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I had a colonoscopy and my dr. Said I have scarring in my colon. No surgeries or injuries. Why the scarring?

I had a colonoscopy and my dr. Said I have scarring in my colon. No surgeries or injuries. Why the scarring?

Information: You should discuss that with who did the colonoscopy. There may be several different reasons. Most commonly it is related to some inflammatory condition, or possible previous surgery. ...Read more

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Should I feel tired 2 days after colon colonoscopy?

Should I feel tired 2 days after colon colonoscopy?

You might.: If your colonoscopy was performed under sedation, some people occasionally feel a "hangover" effect a day later. However, this is unusual, and would more likely be related to lack of sleep from taking your bowel prep. Propofol anesthesia is very short-acting, and would not be an issue. ...Read more

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Is colonoscopy prep the same thing as colon cleansing?

Mostly yes: In preparing for colonoscopy ist is necessary that the bowel be relatively clean so that small lesions can be recognized and biopsied if necessary. As such bowel prep is employed. In essence colonoscopy not performed without a prep. Colon cleansing is also a term employed to cleanse the bowel which has impacted with feces and a high colonic enema is used for cleansing. ...Read more

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Help please! Is air injected into the colon during a colonoscopy?

Help please! Is air injected into the colon during a colonoscopy?

Yes: Colonoscopies generally require slight insufflation of air into the colon... This distends it and allows your doctor to look for polyps. This distension may cause some discomfort which is why most patients get sedated for the procedure. Your doctor generally will try to release all the gas at the end of the procedure so you don't feel too bloated! ...Read more

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Had a colonoscopy, said I have a twisted colon what does that mean?

Had a colonoscopy, said I have a twisted colon what does that mean?

Tortuous colon: Were they able to finish the exam? Sometimes it can make it difficult enough not to be able to get through. Unlikely to cause any issues for you though - just make sure your BMs stay regular. ...Read more

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Are colonoscopy preps essentially the same thing as a colon cleanse?

No: Colon preps are carefully studied to get the colon clean enough that the endoscopist can carefully examine the lining of your colon and not miss a polyp or tumor. Colon cleanse does not get that kind of study and may or may not work. If your colon does not get clean enough for a thorough then you need to do it again...Neither you nor your endoscopist will be happy about that. ...Read more

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How soon after a colonoscopy would you have symptoms if your colon was perforated?

How soon after a colonoscopy would you have symptoms if your colon was perforated?

Need to get checked: Usually a perforation is evident very early in recovery after the procedure, but occasionally if a polyp has been removed perforation can happen within a few days afterwards. Bottom line is that if you are concerned or are having symptoms, you should definitely call your gastroenterologist's office, because the risks could be serious. ...Read more

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Please tell me what the name of the disease is for benign cysts found in the colon during a colonoscopy?

Please tell me what the name of the disease is for benign cysts found in the colon during a colonoscopy?

Very rare: Cysts of the colon are extremely rare. Most when found are in the mesentery or supportive structure of the bowel. in even rarer instances as with polyps detected by colonoscopy, lymphatic cysts that have developed and appear in region where polyps found are removed by colonoscopy. They are rare, benign and reportable when found. ...Read more

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Can you tell me what the name of the disease is for benign cysts found in the colon during a colonoscopy?

Can you tell me what the name of the disease is for benign cysts found in the colon during a colonoscopy?

Polyps: colon polyps, there are many types, most of them benign. Some are called hyperplastic polyps (completely benign), others are tubular adenomas (pre-cancerous), etc. ...Read more

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What would you reccommemd for a 49 year old female who has a colonoscopy report fo"100s of nodules" all throughout her colon?

What would you reccommemd for a 49 year old female who has a colonoscopy report fo"100s of nodules" all throughout her colon?

Colectomy??: Was this your first colonoscopy? Did you know of any polyps previously. A colon that contains literally hundreds of polyps (nodules) suggests a genetic syndrome - the problem being that any of these polyps could potentially be precancerous. You need to discuss this with your gastroenterologist right away, as you may need to have the colon removed. ...Read more

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Developed diverticulitis following colonoscopy. First time ever had it. Colon now messed up. Chance of diverticulitis happening again?

Developed diverticulitis following colonoscopy. First time ever had it. Colon now messed up. Chance of diverticulitis happening again?

Close observation: One risk associated with an elective colonoscopy is a perforation. A plain xray of your abdomen when symptoms start after procedure can help diagnose. It would be difficult to tell the difference from diverticulitis. Recurrance risk will also depend on status of diverticular disease. ...Read more

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Colon cance free for 10 years six yrs ago the colonoscopy found some polyps that were ok Friday having exam do I have a greater chance for polyps?

Colon cance free for 10 years six yrs ago the colonoscopy found some polyps that were ok Friday having exam do I have a greater chance for polyps?

Slightly higher: From the time a polyp forms until becoming cancer usually takes 10 years. As long as you keep having colonoscopy by a thorough physician (ADR above 20) you should never get colon cancer. ...Read more

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Is colon cancer removable by a colonoscopy?

Is colon cancer removable by a colonoscopy?

Possibly: We believe most colon cancers progress through a polyp stage. Polyp simply means growth and can be any size or configuration but can be small. Early on a cancer can still be partly a polyp and be removed during colonoscopy. They still need to be evaluated and treated as a cancer however, and it does not necessarily mean the cancer is cured by just removing it as a cancerous polyp. ...Read more

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What is the difference between a colon MRI and a colonoscopy?

What is the difference between a colon MRI and a colonoscopy?

Scan vs. Scope: An MRI of abdomen/pelvis is a scan utilized to visualize the content of the abdominal cavity including colon. It will depict the external features of the bowel and unless there is an extensive lesion distorting the bowel structure and content, the luminal (phenobarbital) structures are not visualized. This can only be appreciated with scoping of the lumen of the colon with a colonoscope ...Read more

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Is it safe to do a colon cleanse even though I'm not having a colonoscopy?

If free, enjoy it..: If it is free and you enjoy it.........go ahead. It has no medical benefit. ...Read more

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After colonoscopy they founnd inflamed colon and red patches what doese this mean?

Colitis...: Inflammation and red patches (erythema) are hallmarks of colitis. The causes of colitis are many and include infection, ibd (inflammatory bowel disease), circulatory problems and drugs. Sometimes even the laxative bowel prep for colonoscopy can induce these changes. Biopsy of the lining of the colon during colonoscopy can often determine the cause and dictate proper treatment. ...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


Dr. Gary Pess
12 Doctors shared insights

Colonic (Definition)

This is a combining term referring to some condition, treatment or disease of the colon. Such as colonic enema, colonic ...Read more