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:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the Mountains to ... to save lost souls in the Philippines. “The Journey: From the Mountains to the ... teacher of the Bible. She has taught all ages and currently teaches a class ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... healthcare compliance program management, will showcase a range of technology and learning solutions ... Living (NCAL) Convention and Expo to be held October 14–18, 2017 at the ...
(Date:10/12/2017)... ... 12, 2017 , ... Planet Fitness, one of the largest and fastest growing ... open a flagship location in Covington, LA at 401 N. U.S. Highway 190, in ... to Office Depot in the Holiday Square shopping center. Its location allows it to ...
(Date:10/12/2017)... ... 12, 2017 , ... IsoComforter, Inc. ( https://isocomforter.com ), one of ... innovative new design of the shoulder pad. The shoulder pad provides optimal support ... your pain while using cold therapy. By utilizing ice and water that is circulated ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... a leader in post-acute health care, have expanded their existing home health joint ... Health. , AccentCare has been operating a joint venture home health company with ...
Breaking Medicine News(10 mins):
(Date:10/5/2017)... 2017  In response to the nationwide opioid ... Surgeons (AAOMS) released prescribing recommendations that urge ibuprofen ... as a first-line therapy to manage a patient,s ... Recognizing the value and importance of ... Prescribing: Acute and Postoperative Pain Management" stresses that ...
(Date:10/4/2017)... 4, 2017 OBP Medical , ... medical devices, today announced regulatory approval from ... (or Agência Nacional de Vigilância Sanitária (ANVISA)) to ... surgical retractor with integrated LED light source and ... and exposure of a tissue pocket or cavity ...
(Date:10/2/2017)... -- AllianceRx Walgreens Prime, the combined central specialty pharmacy and ... manager Prime Therapeutics LLC (Prime), today officially began the ... of new signage at its headquarters in ... few other company-owned facilities across the country. This also ... whom will begin to see the AllianceRx Walgreens Prime ...
Breaking Medicine Technology: