Sunday , August 1 2021

An easy blood test can sometimes detect cancer. But there is a catch – the national



One day, people can get cancer tests easily as they can check their cholesterol.

"Liquid Biopsy" – Blood Testing – Cancer is an active field of research for diagnosis. Research is still in the early stages and has been the test years, perhaps more than a decade, being available to the general public, experts say it can be valuable.

Dr Anbartan University's Department of Oncology John Lewis states that, "I think it is remedial in the deadly and possibly initial stages of early detection of cancer, it will probably become a game changer."

How the fluid biopsy test works

These tests work by detecting changes in blood flow, such as mutations of variable DNA or certain molecular changes that indicate the presence of cancer. Right now, cancer tissue samples are diagnosed by biopsy, which is a more aggressive method.

Fluid biopsy may be used for many purposes, such as cancer treatment is actually reducing tumor, depending on the specific genetic mutation of the patient, and in order to detect individually cancer treatment. At least, researchers are hoping.

For a recent study published in Nature, a research team located in Toronto is capable of training computer program to identify some chemical changes in the bloodstream for people with cancer in the early stages, and also identify what type of cancer of the patient's cancer is. A few different types of lists.

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"This door opens, it is still in the research phase, but it opens the door to a biopsy for early cancer," said senior director of the Margaret Cancer Center, study co-author Daniel D. Carvalho.

In another study published in science in early 2018, there was also promising results for blood tests in cancer detecting cancer, which identified eight different cancers with a moderate success rate of 70% in 1,000 patients.

De Carvalho said that these processes need to be corrected, cleaned and tested before they are still made available in the mass market, and it may take years. But she thinks that early cancer can make a big difference for some people.

"We already know about cancer, it is easy to treat a patient."

For these tests, "The goal is to find out when the tumor is so small that you can take it out," said Canadian Guide to Integrated Molecular Epidemiology in the Sinai Health System in Toronto, Ryan Hung.

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Hung, who is another co-author of Nature Study, thinks that fluid biopsy can be especially helpful for patients with lungs, pancreas or other aggressive, rapidly growing cancers, where early discovery treatment makes a big difference in the results.

Cancer treatment

However treatment is still a big question. What do you do if you get cancer, but can not do anything about it?

"It's currently a very active discussion," said Lewis.

"If we know something and we do not have a clear, clinical path ahead, is that information useful?"

In prostate cancer, for example, PSA (prostate-specific antigen) tests have been criticized for excessive diagnosis.

"For example, PSA tests have allowed many men to test prostate cancer, but the side effects of PSA screening is that many men with non-invasive unstable prostate cancer have also been diagnosed," he said. This test has been criticized for which there may be unnecessary extra testing or treatment for any problem that can never cause any problems.

"With diagnosis of cancer, there is anxiety and burden based on diagnosis, and in general, most people want to do something about it. Mostly, there is no clear clinical benefit or the option of therapy."

Hung said that this problem is less in cancerous forms of cancer like lung cancer. "There are rarely seen lungs or pancreatic cancer, so for that reason, an issue of excessive diagnosis is reduced, but it is an issue for other types."

He said these tests would not be able to lead directly to cancer diagnosis. Instead, patients will have to go for CT scan and other imaging tests after positive results.

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De Karawalows hopes that their computer program trains themselves to better identify various cancers, so they will know who will lead to serious medical problems and who will, and accordingly identify them.

For less aggressive cancers such as prostate cancer, the important thing is to identify whether the patient is cancer or cancer will kill the patient, Lewis said.

"So the liquid biopsy and the whole field, should be more precise than & # 39; I have cancer? & # 39; Must be certain about it, & # 39; Is my aggressive form of cancer on which Do I need to work? & # 39;

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