Lung cancer screening refers to strategies used to identify early lung cancers before they cause symptoms, at a point where they are more likely to be curable; because localized, stage I lung cancer has a substantially higher long-term survival rate than advanced-stage disease, screening aims to catch the cancer before it spreads. The three main types are low-dose computed tomography, chest X-rays and sputum cytology tests, and results from large randomized studies such as the United States National Lung Screening Trial have prompted the United States Preventive Services Task Force, the Centers for Medicare and Medicaid Services and other professional bodies to recommend low-dose CT screening for individuals at high risk of the disease.
Facts
Partially Attested
Origin YearSourced to the subject's own accountMarks the earliest published CT-based lung cancer screening study (Japan, 1369 subjects). Earlier chest x-ray screening trials predate this and were found ineffective; low-dose CT screening was not widely recommended until the 2011 National Lung Screening Trial results, so no single agreed origin year exists. FAQs
Who do the recommendations say should be screened for lung cancer?
Yearly low-dose CT is recommended for adults aged 50 to 80 with a 20 pack-year or more smoking history who smoke now or quit within the past 15 years.
The US Centers for Disease Control and Prevention states that the recommended screening test is low-dose computed tomography, and that screening is recommended only for adults at high risk of getting lung cancer based on their smoking history and age. It reports that the US Preventive Services Task Force recommends yearly screening with low-dose CT for people who have a 20 pack-year or more smoking history, who smoke now or have quit within the past 15 years, and who are between 50 and 80 years old. A pack-year means smoking an average of one pack of cigarettes per day for one year. This describes the published recommendation and is not medical advice.
Connections
Sources
1. Wikipedia
Wikipedia contributors, Wikimedia Foundation
2. Lung Cancer Screening (Wikipedia)
WikipediaHistory section, 1996 Japan CT study paragraph
In 1996, results were published of a study of 1369 subjects screened in Japan that revealed that 73% of lung cancers that were missed by chest x-ray were detectable by CT scan.
https://en.wikipedia.org/wiki/Lung_cancer_screening, lead section
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Lung cancer screening refers to cancer screening strategies used to identify early lung cancers before they cause symptoms, at a point where they are more likely to be curable.
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