A 41-year-old member asked:
Disclaimer

can i be screened for colon cancer with a ct scan instead of a colonoscopy?

5 doctor answers
Dr. Ronald Kline
Specializes in Colon and Rectal Surgery
Yes: Virtual colonoscopy can screen for polyps. If one is found a traditional colonoscopy will be needed to remove it. Virtual colonoscopy is good for follow-up after a polyp has been removed.
Answered on Mar 23, 2018
1
1 thank
Dr. Arie Pelta
19 years experience Colon and Rectal Surgery
Maybe: Not standard of care . Be aware you are awake and if find polyps needs to repeat bowel prep and perform colonoscopy on separate day.
Answered on Mar 23, 2018
Dr. George T Tsai
26 years experience General Surgery
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.
Answered on Mar 23, 2018
1
1 comment
1
1 thank
Dr. Michael Thompson
19 years experience Hematology and Oncology
Whomever is able to develop the computer algorithm to "digitally subtract" stool from CT images of "unprepped" patients will win a noble prize. I know of investigators working on that and it isn't there yet. However, prepped CT colography has come a long ways. Ideally if a lesion is found a prepped patient could immediately be given a traditional colonoscopy.
Jan 27, 2012
Dr. Andrew Turrisi
46 years experience Radiation Oncology
As you can see from: All of the reasonable answers, the answer is a definitive no. If you find someting by ct (with prep) you will need another prep and endoscopy to prove the answer. Each is charged. Two preps are worse by double one. And conscious sedation is sufficient 9 times out of 10, and lower co-pay.
Answered on Mar 23, 2018
Dr. Arie Pelta
19 years experience Colon and Rectal Surgery
You can: It is a screening option. However if a polyp is found then need to repeat the procedure with a colonoscopy and polypectomy.
Answered on Oct 2, 2018

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month

Related questions:

A 33-year-old female asked:
Dr. Andrew Seibert
34 years experience Gastroenterology
CT vs. colonoscopy: Although CT can identify some colon cancers, it can certainly miss many, particularly the smaller (still potentially curable) ones. Colonoscopy is the ... Read More
1
1 thank
A 54-year-old male asked:
Dr. Richard Romano
8 years experience Internal Medicine
Colon screening : To see inside the colon well , it needs to be cleaned very well So a colonoscopy or a CT scan can be limited in its ability to detect cancer. A rece ... Read More
A 39-year-old male asked:
Dr. Mark Hoepfner
38 years experience General Surgery
Depends: A ct scan does not evaluate colon cancer very well. If there is "advanced" cancer as you asked, possibly a large colon mass could be seen, or if there ... Read More
2
2 comments
1
1 thank
A 48-year-old male asked:
Dr. Gurmukh Singh
48 years experience Pathology
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 ... Read More

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month