Is colonoscopy needed every 10 years if initial screening is negative?

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• In a new study, researchers say that people who do not show signs of colorectal cancer during the first colonoscopies can probably wait 10 years or more before their next examination.
• Experts say that colonoscopies are a high-quality test, and a longer wait can be helpful if the person has no family history of the disease.
• But other experts say that waiting for more than 10 years is risky because colonoscopy can miss polyps and later turn into cancerous cells.

If the last exam is clean, you may not need to have a colonoscopy every 10 years.

Those who check out as “negative” on high-quality colonoscopies have a significantly reduced risk of developing colorectal cancer (CRC) well beyond 10 years after screening. Investigation Is called.

American Cancer Society Recommendation From age 45, require regular colonoscopies (camera-assisted tests for diarrhea) every 10 years for adults at average risk.

“An average-risk adult is defined as a person without a family history of CRC or polyps, a personal history of CRC, or a personal history of chronic inflammatory bowel disease such as ulcerative colitis or Crohn’s disease.” Dr. David SamadhiDirector of Men’s Health and Urology Oncology at St. Francis Hospital in Roslyn, NY.

But the researchers Maria Skudovsk Curie National Institute of Oncology In Warsaw, Poland, their findings suggest that the currently recommended 10-year interval for colonoscopy screening is safe and could potentially be extended. Said.

“Our findings confirm that high-quality screening colonoscopy 10-year intervals are safe and do not benefit from more frequent screening.” Institute of Gastroenterology Working research author Nastazja Pilonis. “Furthermore, findings suggest that this interval may be extended only if it is certain that all endoscopy is of high quality.”

Dr. Seth David RosenHealthline, a gastroenterologist at the Miami Cancer Institute in Florida, said that high-quality “proper preparation of the colon to visualize polyps and at least 20% of the regular colonoscopies they perform. Screening.”

The study, published in the Annals of Internal Medicine, found that negative screening was associated with a 72% reduction in colorectal cancer risk and an 81% reduction in illness deaths for up to 17 years.

“The risk of colorectal cancer and mortality from colorectal cancer is very low and stable throughout the 17.4 year observation period,” says Pilonis.

The researchers drawn conclusions from data collected from 165,887 individuals in the colonoscopy screening registry. They examined colorectal cancer risk and mortality after negative and high-quality colonoscopies had negative results.

The authors emphasized that the study showed that high-quality colonoscopy was highly effective in detecting colorectal cancer, including in women.

“Previous studies have shown that women do not benefit from colonoscopies as much as men,” Pilonis said. “When we looked at all colonoscopies, we found this difference in results, but when we looked at only high-quality colonoscopies, the risk of CRC was the same in both women and men. I knew there was.”

“The results of this study should help doctors be confident in following the recommended 10-year rescreening interval guidelines after routine colonoscopies,” Samadi told Healthline. “This study also demonstrates the importance of high-quality colonoscopy, which allows rescreening intervals to be longer than every 10 years.”

Dr. Jesse P. HoughtonAs a senior medical director in the gastroenterology department of the Southern Ohio Medical Center, Gastroenterology Associates, colonoscopy warns that it is difficult and far from complete.

“When all colonoscopies are performed together, a “miss rate” of up to 15% of adenomas during colonoscopy has been reported,” Houghton told Healthline. “Most gastroenterologists are reluctant to perform another colonoscopy after a “normal test” is reported because of these factors. We do not recommend changing our recommendations from the governing body until more data is available than this one study. “

“Ideal screening and surveillance intervals continue to be discussed,” he said. Dr. Jeffrey Nelson, FACS, FASCRS, Department of Surgery, Inflammatory Bowel and Colon Disease Center at Mercy Medical Center in Baltimore. “The American Cancer Society has recently reduced the age at which people are encouraged to start screening from age 50 to 45. Because of the increased colorectal cancer seen in patients in their early 50s and 50s. It can take 10 to 15 years to change, so early screening may help detect these polyps.”

Nelson told Healthline that the study itself “should be a more rigorous test of the hypothesis that practice should not be changed, and that the screening interval for average-risk people can be extended under certain circumstances. It will help you design a prospective study.”

“Only then could the strategy be applied to the general public,” he said.

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