Navigation Links
Colorectal cancer risks quantified
Date:4/16/2009

Although the presenting features of colorectal cancer are well known, the risks they confer are less well defined. New research published in the open access journal BMC Medicine describes the exact risks posed by eight clinical features for the development of colorectal cancer in a large group of patients.

William Hamilton led a team of researchers from the Universities of Bristol and Birmingham who studied the primary care records of 5,477 colorectal cancer patients and 38,314 controls. He said, "General practitioners (GPs) gain relatively little experience in the diagnosis of colorectal cancer because the incidence is about one per GP per year, and only a proportion of these are diagnosed in primary care. Our findings strengthen the view that rectal bleeding carries a high enough risk to warrant investigation irrespective of other symptoms. Current guidance requires persistence of bleeding for 6 weeks, or accompanying diarrhoea. In our opinion, these additional requirements are unnecessary."

The authors found that the highest risks were conferred by rectal bleeding and change in bowel habit. For men over 60 years, rectal bleeding positive predictive values (PPVs) ranged from 2.4-4.5%. For women, the figures were lower, but still in the 2-3% range. Dr Hamilton added, "Change in bowel habit is less simple: GPs contributing to the database must have been using this term very differently from the separate terms of constipation and diarrhoea, in that the PPVs for change in bowel habit were considerably higher. We cannot know what features led GPs to write change in bowel habit in the notes in preference to the specific motility symptoms however, from our results it is clear that they were identifying a riskier feature, and one that warrants investigation".

The PPVs of the other presenting features were lower, but still significant. The values for constipation, diarrhoea, abdominal pain and loss of weight were all below 1.5%, confirming that they are low risk symptoms, at any age and in either sex. However, the authors are keen to point out that these are not 'no-risk' symptoms. They say, "The high-risk symptoms of rectal bleeding and change in bowel habit were only recorded in 15.6% and 11.2% of cases, respectively. The remaining majority with only a low risk symptom could have their diagnosis expedited in a number of different ways, such as new scoring systems, new biomarkers or measurement of rectal DNA. Without one of these initiatives, or a combination of them, patients with a low risk symptom will continue to be at risk of delayed diagnosis, and possible emergency presentation".


'/>"/>

Contact: Graeme Baldwin
graeme.baldwin@biomedcentral.com
44-078-774-11853
BioMed Central
Source:Eurekalert

Related medicine news :

1. Direct Anesthetic Infusion Helps Colorectal Cancer Patients
2. The fight against colorectal cancer
3. Simple, personalized interventions improve colorectal cancer screening rates
4. Studies lend insights into colorectal cancer screening
5. Virtual colonoscopy -- a new technology for colorectal cancer screening?
6. Frequently Asked Questions When Considering a Colorectal Cancer Screening Test, From the American College of Gastroenterology
7. 18F-DG PET/CT can highly increase the detection of colorectal cancer
8. Colorectal cancer screening remains essential for elderly Americans
9. Racial and ethnic differences in colorectal cancer emphasize importance of screening
10. ASGE Applauds News of Drop in Colorectal Cancer Deaths
11. Society of Gynecologic Oncologists Provides Guidelines for Offering Genetic Risk Assessment to Women With a Personal or Family History of Breast, Ovarian, Uterine or Colorectal Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... ... , ... Advanced Inc., a leading provider of travel therapy and travel nursing ... as Advanced Inc.’s Chief Financial Officer, effective December 1, 2016. Jason previously served as ... operational leadership experience to Advanced Inc. He began his career in finance at Ernst ...
(Date:12/2/2016)... ... December 02, 2016 , ... With the number of pain ... an injury, patients must find the one that works for them. When an inventor ... a machine that worked and decided to share it with others. , He developed ...
(Date:12/2/2016)... Delaware (PRWEB) , ... December 02, 2016 , ... ... released a new version of its SaaS LIMS, CloudLIMS Lite. CloudLIMS Lite helps ... sample entry through labeling, storing, shipping and disposal. The new version is a ...
(Date:12/2/2016)... ... 2016 , ... Yisrayl Hawkins, at The House of Yahweh in Abilene, Texas, ... Bible Prophecy. Yisrayl says this generation, known as the Last Generation, started in 1934 ... details line up exactly with Bible Prophecy – a protected way for those who ...
(Date:12/2/2016)... ... December 02, 2016 , ... Date aired: November 28, 2016 ... Diabetes: The Owner’s Manual, http://realtimepressrelease.com/press-releases-tagged-with/daryl-wein , Sharon Kleyne, America’s leading ... Climate Change and Your Health radio program syndicated on Voice of America, welcomed ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... GARDENS, N.Y. , Dec. 2, 2016  LifeVac, ... will be included in the Emergency Response Training and ... are very excited to have LifeVac become part of ... Lih , Founder and CEO of LifeVac. "Having an ... LifeVac safely and effectively will help leverage our efforts ...
(Date:12/2/2016)... 2, 2016 According to ... Market by Product (Instruments, Reagents, Software), Technology (Immunoassay, ... Cardiology, Nephrology, Infectious Diseases) - Forecast to 2021" ... at USD 60.22 Billion in 2016. This market ... 5.5% during the forecast period (2016-2021) to reach ...
(Date:12/2/2016)... -- In the first ever attempt to include phytocannabinoids ... C. sativa, the Hebrew University in Jerusalem, the University ... , the Universita` del Piemonte Orientale and Phytoplant Research ... unified inventory of phytocannabinoids of different botanical origin. ... chemical and structural diversity of phytocannabinoids. As a result ...
Breaking Medicine Technology: