Canadian Cancer Statistics 2011 released by the Canadian Cancer Society with special focus on colorectal cancer
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TORONTO, May 18 /PRNewswire/ - Use of a simple, at-home screening test by
Canadians can prevent many unnecessary colorectal cancer deaths,
according to a special report about colorectal cancer in Canadian Cancer
If 80% of Canadians aged 50+ were screened over the next 10 years, it is estimated that 10,000 to 15,000 deaths could be prevented.
Colorectal cancer is the second leading cause of cancer death in Canada, with an estimated 8,900 Canadians dying from the disease in 2011. It is the fourth most commonly diagnosed cancer in Canada after prostate, lung and breast cancer. An estimated 22,200 new cases are expected in Canada in 2011. Although rates of colorectal cancer incidence have been declining over the past two decades, the number of new cases has increased substantially due to population growth and aging.
The Society recommends that Canadians aged 50 and over get screened every two years with a simple stool test (known as FOBT or FIT). But currently, only 32% of Canadians in this age group report having a screening test. For people with symptoms or at higher risk of colorectal cancer, it is important that they talk to their doctors.
"One of the major goals of cancer screening is to detect cancer in people who have no symptoms," says Gillian Bromfield, Senior Manager, Cancer Control Policy, Canadian Cancer Society. "For colorectal cancer, screening from age 50 using a stool test leads to fewer deaths. We need to identify and overcome barriers to colorectal cancer screening so that more Canadians get screened regularly. It's a simple test and it saves lives."
The fecal occult blood test (FOBT) and the fecal immunochemical test (FIT) are simple, at-home kits that test for trace amounts of blood in the stool, which can be a sign of colorectal cancer.
"It's very important that doctors talk to their patients about screening," says Bromfield. "Canadians who have discussed colorectal cancer screening with their doctors are more than twice as likely to get screened regularly."
According to the 2009 Colon Cancer Screening in Canada survey, 71.7% of Canadians aged 50 to 74 who discussed colorectal cancer screening with their doctors are up to date with screening, compared to only 32.6% who have not had the discussion.
Some other facts about screening, according to the survey:
Risk factors and prevention Risk factors for colorectal cancer include a diet high in red or processed meat, being overweight, physical inactivity, smoking and a family history of the disease. The best ways to reduce the risk of colorectal cancer - along with screening - are eating a healthy diet, being physically active in order to maintain a healthy body weight, not smoking and avoiding excessive drinking.
Diagnosis and treatment After a positive screening test or symptoms such as bleeding, obstruction or abdominal pain, diagnosis is commonly made using a medical exam such as colonoscopy or sigmoidoscopy.
Treatment depends on the stage at diagnosis and may include surgery, chemotherapy or radiation.
Survival Compared to other cancers, colorectal cancer has a moderate prognosis with a five-year relative survival rate of 63%. This is better than some cancers, such as lung (16% survival), but worse than prostate (96%) or breast (88%).
Canada has one of the best colorectal cancer survival rates in the world - slightly lower than the US, but better than most of Europe, including the UK and Scandinavia.
The five-year colorectal cancer survival has improved considerably - from 56% in 1992-94 to 63% in 2004-06. Survival is expected to continue to improve in the future as screening uptake increases.
Trends by province Participation in screening varies widely across the country, with the lowest rate in Quebec and the highest in Ontario and Manitoba (the first two provinces to actively launch province-wide screening programs in 2008 and 2007 respectively).
Conclusions and recommendations
Treatment advances and screening have led to important reductions in colorectal cancer deaths and improvements in survival. However, further improvements will require the following:
"By becoming more aware of colorectal cancer, how to screen for it and how to prevent it, Canadians can help ensure they are looking after themselves and their families," says Dr. David Butler-Jones, Canada's Chief Public Health Officer.
A survivor's story To her friends, 55-year-old Kavita Jagasia is a walking billboard for the importance of regular colorectal cancer screening.
"Because of what happened to me, now they've all been screened," says Kavita, diagnosed with colorectal cancer in July 2008. "Everybody suddenly woke up."
The Toronto-area account manager in corporate travel was diagnosed after several months of noticing redness in her stool. She told herself it was nothing to worry about, but friends started commenting on her weight loss even though she wasn't dieting. Urged by her husband, she went to her family doctor. A colonoscopy showed she had stage 2 colorectal cancer. Surgery two weeks later removed the tumour and further treatment was not required.
Kavita considers herself lucky, but says a simple screening tool like the fecal occult blood test (FOBT or FIT) could have made much of her experience unnecessary.
People may not want to do it because they think it's "gross," she says, but "if I had done it I probably would have been treated much earlier. I probably would have been treated at the polyp stage, rather than a full-blown cancer."
While a healthy lifestyle may reduce people's cancer risk, Kavita knows that being of normal weight, a vegetarian, non-smoker and non-drinker was not enough to prevent her own cancer.
"If it can happen to me, it can happen to anybody," she says.
General highlights: Canadian Cancer Statistics 2011
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Canadian Cancer Statistics 2011 is prepared, printed and distributed through a collaboration of the Canadian Cancer Society, the Public Health Agency of Canada, Statistics Canada and provincial and territorial cancer registries.
The Canadian Cancer Society fights cancer by doing everything we can to prevent cancer, save lives and support people living with cancer. Join the fight! Go to fightback.ca to find out how you can help. When you want to know more about cancer, visit cancer.ca or call our toll-free bilingual Cancer Information Service at 1 888 939-3333.
For more information about Canadian Cancer Statistics 2011, visit cancer.ca.
Colon Cancer Screening in Canada was commissioned by the Canadian Partnership Against Cancer and conducted from March 10 to April 17, 2009, by Angus Reid Public Opinion and the Applied Health Research Centre at St. Michael's Hospital in Toronto. A total of 3,153 Canadians were randomly surveyed. The margin of error which measures sampling variability is +/- 2.1%. The results have been statistically weighted according to the most current education, age, gender and region Census data to ensure the sample is representative of the adult population aged 45 to 74 in Canada.
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SOURCE Canadian Cancer Society (National Office)
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