From a single organ to all parts of the body, how does cancer metasse?

In fact, about 90% of cancer patients die as a result of metastasis.
cells have metastasis ability, which is an important fatal feature of cancer, and is also one of the important differences between benign tumors and malignant tumors.
cancer metasnse? What conditions are required? Where is the easiest transfer? In today's article, we'll give readers detailed answers to some of the questions about cancer metastasis.
is cancer metastasis? The so-called "metastasis" refers to the process by which cancer cells leave the original site (the primary lesions) and spread to other parts of the body through the blood system, lymphatic system, or other means, and grow new tumors in the right areas.
metastasis can be divided into local metastasis and distant metastasis.
Local metastasis is when cancer cells have spread to nearby organs or tissues, such as lymph nodes, but not to other organs or tissues in the body;
, however, not all cancers metasnse.
this difference is particularly pronounced in skin cancers, such as substrate cell skin cancer, a common non-melanoma skin cancer that almost never metases, while another skin cancer, melanoma, often metastasis occurs.
, cancer metastasis is not the same, some faster, and some slower.
cancer metas metasnse? The metastasis of cancer is determined by the biological nature of the tumor.
some tumors may develop invasive growth, invading surrounding tissues or organs for metastasis to surrounding organs or tissues.
, cancer cells secrete a substance that reduces the adhesion between cancer cells, making it easier for cancer cells to fall off the tumor.
cancer cells fall off, enter nearby blood vessels or lymphatic tubes, follow the lymphatic or blood flow first to nearby organs, and finally to the whole body.
steps to metastasis cancer? It takes several steps for cancer cells to metasn by metastasis.
example of cancer cells metastasis through the blood or lymphatic system: 1. Cancer cells detach from the original tumor and enter the blood or lymphatic system and carry them to other parts of the body.
2. Cancer cells attach to the walls of blood vessels or lymphatic tubes and pass through the walls of blood vessels or lymphatic tubes into new organs.
cancer cells grow and multiply in new locations, forming tiny tumors.
4. Tumors cause new blood vessels to grow, creating a blood supply that allows metastasis tumors to continue to grow.
when cancer cells go through these steps, the new cancer cells may no longer be exactly the same as those in the original tumor, making them more difficult to treat.
, even though the cancer has metastasis, it is still named after the site where the metastasis began.
, for example, breast cancer that has been transferred to the lungs is called "metastasis breast cancer" rather than lung cancer.
are the conditions needed for cancer metastasis? When cancer cells break away from the tumor, they face a difficult living environment.
because of the cancer cells themselves and environmental factors (such as being crushed by blood flowing in blood vessels, recognized by the immune system, killed, etc.), a significant proportion of the cancer cells that fall off will die in a short period of time.
, however, if cancer cells can survive this process, they need to "land" in a nutritious, oxygen-rich place that also allows them to escape the immune system.
if cancer cells can find a place that meets all these conditions, it is possible to survive there and eventually develop metastasis cancer.
, however, sometimes metastasis cancer cells can remain inactive for years in one part of the body before they begin to grow.
theory is that cancer cells spread like seeds throughout the body, but to grow and become metastasis cancers, they need to find fertile soil to settle down.
, for example, studies have found that the liver is better suited than anywhere else for pancreatic tumor cells to settle and survive.
think this may come down to the "sticky hook" found on the surface of cancer cells.
hooks are a bit like magic stickers that allow cancer cells to stick to certain organs of the body.
different types of cancer cells have different hooks on their surfaces, then their organs that are prone to adhesion are also different.
, it may not be that simple.
also found that successful cancer metastasis is by no means purely a chance, and that cancer cells may actually alter tissue in other parts of the body, improving their chances of survival.
are the common metastasis sites for cancer? Cancer can be transferred to almost any part of the body, most commonly to the bones, liver and lungs.
, however, different types of cancer are easier to transfer to certain areas.
are listed below for some of the most common metastasis sites for common cancers (excluding lymph nodes).
in general, although scientists have learned a lot about cancer metastasis, there are still many unsolt mysteries.
how to stop cancer cells from metastasis and how to detect and treat them in a timely manner before they are transferred, more research is needed to find out for us.
we look forward to the day when scientists and doctors will find a good way to solve the problem of cancer metastasis and improve the survival rate of cancer patients for the benefit of cancer patients.
Latest Global cancer data: Cancer burden rises to 19.3 new million cases and 10.0 million cancer deaths in 2020. Retrieved Nov 16 ,2020,from [2] Science Surgery: ‘How do tumours ‘know’ where to spread?’. Retrieved Jan 26 ,2021,from [3] Metastatic Cancer: When Cancer Spreads. Retrieved Jan 26 ,2021,from [4] Science Surgery: ‘Why do some cancers metastasise, but others don’t?’. Retrieved Jan 26 ,2021, from