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Can Chest X Ray Detect Lung Cancer

author
Brent Mccoy
• Thursday, 26 November, 2020
• 8 min read

Lung biopsy, involving the extraction of suspicious tissues by needle or other methods, is ordered if a CT scan suggests cancer. If cancer is diagnosed, other tests will be performed to stage and grade the tumor so that the appropriate treatment can be delivered.

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(Source: www.bostonmagazine.com)

Contents

Positron emission tomography (PET) scans are less commonly used for the initial diagnosis of lung cancer and are considered more useful for the staging of the disease. A study published in JAVA involving 150,000 people at high risk of lung cancer reported that four years of annual chest X-rays did nothing to alter the death rate in the group.

Although the consensus among health officials is that the risks of annual CT screening in other groups outweigh the benefits, a 2019 study in the Journal of Thoracic Oncology suggests otherwise. According to the researchers, low-dose CT screening in non-smokers detected a significant number of cancers in the early stages that would have otherwise been missed.

On the downside, it is unclear if annual exposure to low-dose radiation might actually increase the risk of lung cancer over time. As reassuring as a “normal” result may seem, don't allow it to give you a false sense of security if the cause of persistent symptoms remains unknown or if the diagnosis you were given can 't explain them.

Only one of every 500 chest X-rays and one out of every 100 chest computerized tomography (CT) scans will show pulmonary nodules. About half the people who smoke and are over age 50 years will have nodules, many of them being noncancerous, on a CT scan of their chest.

Routine blood tests are not used to diagnose lung cancer, but they can indicate if cancer has spread to other organs, such as the liver or kidneys. For example, if cancer has spread to the bones, it might be an abnormal increase in the levels of calcium and alkaline phosphatase.

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From the WebMD Archives April 8, 2005 -- When the news that Peter Jennings had lung cancer hit earlier this week, many WebMD users asked why doctors don't use chest X-rays to diagnose lung cancer at an early stage, when it's more treatable. WebMD turned to cancer expert Harold Burstein, MD, assistant professor of medicine at Harvard Medical School in Boston, for the answer.

The vast majority of lung cancer cases are caused by smoking, ” Burstein tells WebMD. Chest X-rays are inadequate for diagnosing lung cancers at an early stage, when they are more treatable.

The hope was that these CT scans would be able to find smaller, earlier cancers without leading to further unnecessary tests. “A variety of recent studies in the U.S. and Japan have suggested that high-resolution CT scans often can detect lung cancers.

However, he explains that these were small, early studies that were not able to answer the questions of whether CT scans can actually save lives. The report by the federal Agency for Healthcare Research and Quality and the U.S. Preventive Health Services Task Force says evidence that chest X-rays, CT scans, and other forms of screening can save lives is poor.

Chest X-rays produce images of your heart, lungs, blood vessels, airways, and the bones of your chest and spine. The image helps your doctor determine whether you have heart problems, a collapsed lung, pneumonia, broken ribs, emphysema, cancer or any of several other conditions.

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You may be asked to move into different positions in order to take views from both the front and the side of your chest. During the front view, you stand against the plate, hold your arms up or to the sides and roll your shoulders forward.

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