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Mammogram Benefits Need Relook
Routine mammograms only lead to “overdiagnosis of invasive breast cancer by as much as 42 per cent,” says a paper published in the Cancer Causes Control journal by University of Sydney's School of Public Health.
The varsity paper titled, Estimates of overdiagnosis of invasive breast cancer associated with screening mammography, points to the pressing need to develop tests to predict which screening-detected cancers are likely to progress.
"The problem is right now we just don't know which way a cancer detected through mammography is going to go," says Associate Professor Alex Barratt, one of the paper's authors. "We know there is overdiagnosis across the population but we can't pinpoint which women are overdiagnosed.”
Increased mammography could indeed mean reduced mortality rate, they acknowledge but there is a flip side to it - 30 to 42 per cent excess of women diagnosed with invasive breast cancer, over that expected and they undergo unnecessary treatment.
This translates to about 23 to 29 per cent of all breast cancers diagnosed in New South Wales as being overdiagnosed and over treated, said the study.
It also takes into account risk factors such as hormone replacement therapy and obesity, both of which have contributed to the rise of breast cancer since about the same time as publicly-funded mammography screening programmes were introduced.
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More News on: Breast Augmentation Surgery, Breast Cancer Screening using Mammogram, Breast Lumps in Women - Symptom Evaluation
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