First-Time Colon Cancer Screening May Be Beneficial for Elderly

Healthy seniors might gain an extra month or more of life by getting checked, study suggests

  • Print

TUESDAY, June 3, 2014 (HealthDay News) -- Colonoscopies in certain elderly people who've never been screened could be a cost-effective way to improve their health while extending their lives a bit.

The study findings, which rely on statistical projections, aren't definitive. Still, the research suggests that "colorectal cancer screening should be considered well beyond age 75 in the elderly without previous screening," said study lead author Frank van Hees. He is a scientific researcher with the department of public health at Erasmus University Medical Center in Rotterdam, the Netherlands.

At issue are three kinds of tests: colonoscopy; a similar test called a sigmoidoscopy; and fecal immunochemical tests in which fecal samples are tested by a laboratory for signs of blood in the stool. Only colonoscopies allow physicians to remove potentially dangerous polyps during the procedure. If signs of trouble are found in the other tests, a follow-up colonoscopy is required.

"It is a common misconception that guidelines recommend against colorectal cancer screening in all individuals aged over 75," van Hees said. In fact, guidelines in the United States only recommend against routine screening in people aged 75 and older if they've already had regular negative screenings from age 50 onward, according to background information in the study.

"None of the current guidelines addresses the appropriateness of screening in those aged over 75 without previous screening," van Hees said. Estimates suggest that there are 4 million people in the United States who fall into that category, he noted.

In the new study, van Hees and colleagues used statistical analysis to determine the risks of colorectal cancer for various simulated groups of older people aged 76 to 90. Then they projected what would happen if the simulated groups underwent different types of screening tests.

"This is a method that has been used to examine questions about tests we offer to a population when we don't have the actual data available," explained Dr. David Carr-Locke, chief of the division of digestive diseases at Beth Israel Medical Center in New York City, who's familiar with the study. "You create a model, assume a lot of things, and let it run. It's never a real study of real people."

The findings suggest that screenings for cancer continue to be worthwhile and cost-effective up until age 86 in previously unscreened people without major health problems, including colonoscopies until age 83, sigmoidoscopies up until age 84, and the fecal tests up until age 85 or 86.

As for lifespans, "in healthy individuals aged 76 without previous screening, a screening colonoscopy prolongs life by an average of 36 days," van Hees said. "This effect declines to 26 days at age 80, 13 days at age 85, and only 5 days at age 90. In individuals with a less favorable life expectancy, the benefits of screening are substantially smaller."

The researchers adjusted their statistics to take into account the higher risks of side effects of colonoscopies. And, van Hess said, they tried to account for the unpleasant nature of colonoscopies by assuming "a loss of quality of life equivalent to two full days of life for each colonoscopy performed. We did not assume this burden to increase with age."

Carr-Locke praised the study and said it's appropriate to screen older people for colorectal cancer, especially when they're healthy. "There are a lot of people in their 80s who are very fit and healthy and request screening. We go ahead and do it," he said.

The study is published in the June 3 issue of Annals of Internal Medicine.

More information

For more about colonoscopies, visit the American Cancer Society.

Fact Check

Fact Check

Have you found an error, or know of something we’ve missed in one of our stories?
Please use the form below and let us know.

* Required
  • Please post the headline of the story or the title of the video with the error.

  • Please post exactly what was wrong with the story.

  • Please indicate your source for the correct information.

  • Yes


  • This will only be used to contact you if we have a question about your submission, it will not be used to identify you or be published.

  • Cancel

Having problems with the form?

Contact Us Directly
  • Print

You can comment on most stories on You can also agree or disagree with other comments. All you need to do is be a Winnipeg Free Press print or e-edition subscriber to join the conversation and give your feedback.

You can comment on most stories on You can also agree or disagree with other comments. All you need to do is be a Winnipeg Free Press print or e-edition subscriber to join the conversation and give your feedback.

Have Your Say

New to commenting? Check out our Frequently Asked Questions.

Have Your Say

Comments are open to Winnipeg Free Press print or e-edition subscribers only. why?

Have Your Say

Comments are open to Winnipeg Free Press Subscribers only. why?

The Winnipeg Free Press does not necessarily endorse any of the views posted. By submitting your comment, you agree to our Terms and Conditions. These terms were revised effective April 16, 2010.


Make text: Larger | Smaller


Key of Bart - Four Little Games

View more like this

Photo Store Gallery

  • A pelican comes in for a landing Wednesday afternoon on the Red River at Lockport, Manitoba - Standup photo- June 27, 2012   (JOE BRYKSA / WINNIPEG FREE PRESS)
  • A squirrel enjoys the morning sunshine next to the duck pond in Assiniboine Park Wednesday– June 27, 2012   (JOE BRYKSA / WINNIPEG FREE PRESS)

View More Gallery Photos


Are you concerned about the number of homicides so far this year?

View Results

Ads by Google