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Overdiagnosis is the ... the concept was first recognized and studied in cancer screening—the systematic evaluation of ... Prostate cancer is a classic example, but ...
Overdiagnosis is the diagnosis of "disease" that will never cause symptoms or death during a patient's lifetime. [9] It is a problem because it turns people into patients unnecessarily and because it can lead to economic waste [10] (overutilization) and treatments that may cause harm. Overdiagnosis occurs when a disease is diagnosed correctly ...
Overdiagnosis occurs when all of these people with harmless abnormalities are counted as "lives saved" by the screening, rather than as "healthy people needlessly harmed by overdiagnosis". So it might lead to an endless cycle: the greater the overdiagnosis, the more people will think screening is more effective than it is, which can reinforce ...
Breast cancer, prostate cancer, and colorectal cancer are examples of cancer types that are prone to overdiagnosis. [10] The consequences of overdiagnosis and overtreatment resulting from cancer screening can lead to a decline in quality of life , due to the adverse effects of unnecessary medication and hospitalization.
The authors of this Cochrane review write: "If we assume that screening reduces breast cancer mortality by 15% and that overdiagnosis and over-treatment is at 30%, it means that for every 2,000 women invited for screening throughout 10 years, one will avoid dying of breast cancer and 10 healthy women, who would not have been diagnosed if there ...
For example, it is the time between early detection by screening and the time when diagnosis would have been made clinically (without screening). [1] It is an important factor when evaluating the effectiveness of a specific test .
An example of this kind of overdiagnosis is a person who has prostate cancer and is diagnosed based on a screen, where without treatment the cancer would have started showing symptoms in 4 years and killed the person in 8 years, but where the person died of an unrelated heart attack 3 years after the diagnosis.
Prostate cancer screening is the screening process used to detect undiagnosed prostate cancer in men without signs or symptoms. [1] [2] When abnormal prostate tissue or cancer is found early, it may be easier to treat and cure, but it is unclear if early detection reduces mortality rates.