Results from a study entitled “Overdiagnosis in publicly organised mammography screening programmes: systematic review of incidence trends” were published in the British Medical Journal, or BMJ on July 9, 2009:
Conclusions The increase in incidence of breast cancer was closely related to the introduction of screening and little of this increase was compensated for by a drop in incidence of breast cancer in previously screened women. One in three breast cancers detected in a population offered organised screening is overdiagnosed.
Breast cancer screening may fuel over-diagnosis Reuters – July 10, 2009:
Roughly one in three breast cancers detected in publicly organized mammography screening programs is over-diagnosed — meaning that the cancer will not cause symptoms or death in the woman’s lifetime, according to a study released Thursday.
In the study, Dr. Karsten Juhl Jorgensen and Dr. Peter C. Gotzsche, from The Nordic Cochrane Center, Copenhagen, analyzed how breast cancer rates changed after publicly organized screening programs were introduced in the UK, Canada, Australia, Sweden, and Norway.
Information from at least 7 years before and after the programs were introduced was analyzed and was obtained from both screened and non-screened age groups.
An increase in breast cancer rates was noted in each country that was closely associated with the introduction of screening, the study team reports.
Breast cancer over-diagnosis results in unnecessary treatment for one in three UK Guardian – July 10, 2009:
Screening for breast cancer is leading to over-diagnosis with many women undergoing unnecessary surgery and chemotherapy, scientists say
One in three women who is told she has breast cancer after screening is being diagnosed and treated unnecessarily, scientists say today.
Not all breast cancers are potential killers, say researchers in a paper in today’s British Medical Journal. Some are inconsequential. If they were not picked up, women would not know they had them. But because they are detected through breast cancer screening, women usually undergo surgery and chemotherapy which are traumatic and potentially harmful.
Study Says Lung Cancer Overdiagnosis a Result of Screening
Screening may lead to overdiagnosis of lung cancer, a study reports in the June 7 issue of the Journal of the National Cancer Institute.
Screening for cancer can find tumors that might not otherwise have been diagnosed in a person’s lifetime, a situation called overdiagnosis. Overdiagnosis wastes health care resources. Tests and treatment resulting from overdiagnosis can lead to substantial toxicity and even premature death in patients.
Tags: Uncategorized by Editor
No Comments »