Health

The effect of breast cancer screening is declining

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Testing for breast cancer is expensive. This is illustrated by a Danish / Norwegian study, published in European Journal of Public Healthwhich examined the deaths of 10,580 people with breast cancer among Norwegian women aged 50 to 75.

“The benefits of my results showing is currently declining due to cancer treatment is improving. In the last 25 years, the number of deaths for breast cancer It’s almost half over, ”said Henrik Støvring, who is behind the study.

According to the researcher, the problem is that the diagnosis leads to both the diagnosis of the disease and the prevalence of treatment, which is expensive at the human level and economically.

Overdignosis and overtreatment

When the test was introduced, the estimate was about twenty percent of deaths from breast cancer among those diagnosed could be ruled out. While this coincides with the deaths of nearly 220 people a year in Denmark 25 years ago, today the number has dropped by half.

The study shows that in 1996 it was necessary to invite 731 women to avoid the death of a single breast cancer in Norway, you must invite at least 1,364 and possibly almost 3,500 to get the same results in 2016.

On the other hand, the side effects of screening do not change.

“One in five women aged 50-70, who are told they have breast cancer, have received a” best “diagnosis because of the diagnosis — without diagnosis, they will never notice or feel that they have breast cancer. not during their lifetime, ”he said. researcher.

One in five equals 900 women each year in Denmark. In addition, each year more than 5,000 women are told that the test has led to allegations of breast cancer – an allegation that later turned out to be inaccurate.

Peace, small nodes — but in whom?

Henrik Støvring notes that the results are not useful for show preparation. According to him, the Norwegian result can also be sent to Denmark. Here, women aged 50 to 69 are tested for a mammogram every second year. This is an X-ray of the breast, which can show if the woman has cell changes that could be breast cancer.

The Danish assessment program became a national program offered to all women in the age group in 2007 — three years after the Norwegians. About 300,000 Danish women are invited for breast cancer testing each year.

According to the researcher, the challenge is, at the moment we are not able to differentiate between small tumors that will kill you and those that will not. Some of these small nodes are so stable or grow so slowly that a woman will die as a result of breast cancer without detection, if not tested. But once the swelling of the head is detected, it must be taken care of, although this is not necessary for some of the women – we do not know who it is.

“The mata those invited to the assessment are long overdue breast cancer sufferers longevity, and because we have improved drugs, more effective chemotherapy, and because we have now cancer management methods, which means the health care system is faster than it was a decade ago, ”says Henrik Støvring.


Breast cancer screening does not reduce mortality


Learn more:
Søren R Christiansen et al, Changes in the impact of mammography testing with reduced breast cancer mortality: population analysis, European Journal of Public Health (2022). DOI: 10.1093 / eurpub / ckac047

Its formation
University of Aarhus

hint: Breast cancer test results declining (2022, June 29) Retrieved June 29, 2022 from https://medicalxpress.com/news/2022-06-effect-breast-cancer-screening-declining.html

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