Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Risk of colorectal cancer extremely low 5 years after a normal colonoscopy screening

23.09.2008
A study appearing in the Sept. 18 issue of the New England Journal of Medicine shows that among individuals with no colorectal neoplasia (abnormal growths) on initial screening colonoscopy, the five-year risk of colorectal cancer is extremely low. The data provides support for rescreening at an interval of five years or longer after a normal colonoscopic examination.

"This research is very significant as it is the first large study to provide direct rescreening data on a group of average risk patients who had normal findings on the initial screening colonoscopy," said John L. Petrini, MD, FASGE, president, American Society for Gastrointestinal Endoscopy (ASGE).

"As a result, physicians should consider this important finding when recommending a rescreening schedule to their patients, as this data could have an impact on the costs of colonoscopy and the resources to provide for colonoscopy. There is data suggesting that the procedure may be performed too frequently."

Researchers, led by Thomas F. Imperiale, MD, of the Indiana University School of Medicine and the Regenstrief Institute, examined 1,256 asymptomatic patients 50 years or older, who had no precancerous or cancerous findings on baseline colonoscopy and who underwent follow up colonoscopy at five years. Among this patient population, no cancers were discovered. Advanced adenomas were found in 16 patients (1.3 percent).

ASGE and American Cancer Society colorectal cancer screening guidelines for patients with normal findings on the initial screening colonoscopy recommend repeat screening for average risk individuals every 10 years if they have no symptoms or family history risk. While this data does not directly evaluate the 10-year recommendation, it does establish that colonoscopy screening does not need to be repeated before five years for average risk individuals.

An estimated 49,960 deaths are expected to occur from colorectal cancer in 2008. According to a study released in October 2007 from the CDC and the American Cancer Society, colorectal cancer deaths dropped nearly 5 percent between 2002 and 2004, more than the other major cancer killers (prostate, breast, and lung). Among the key factors playing a role in the decline was prevention through screening and the removal of precancerous polyps.

"This is excellent news and reinforces the importance of colorectal cancer screening beginning at age 50, or even younger if there is a family history of colorectal cancer or polyps," said Petrini. "Colonoscopy plays a very important role in colorectal cancer screening and prevention because it is the only method that allows us to remove polyps before they turn into cancer."

Anne Brownsey | EurekAlert!
Further information:
http://www.asge.org

More articles from Health and Medicine:

nachricht One gene closer to regenerative therapy for muscular disorders
01.06.2017 | Cincinnati Children's Hospital Medical Center

nachricht The gut microbiota plays a key role in treatment with classic diabetes medication
01.06.2017 | University of Gothenburg

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Quantum thermometer or optical refrigerator?

23.06.2017 | Physics and Astronomy

A 100-year-old physics problem has been solved at EPFL

23.06.2017 | Physics and Astronomy

Equipping form with function

23.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>