Metastasis – Can you believe that this causes 90% of all cancer deaths ?
Metastasis is a pathogenic agent’s spread from an initial or primary site to a different or secondary site within the host’s body; the term is typically used when referring to metastasis by a cancerous tumor.
Cancer cells can spread locally by moving into nearby normal tissue. Cancer can also spread regionally, to nearby lymph nodes, tissues, or organs. And it can spread to distant parts of the body. When this happens, it is called metastatic cancer. For many types of cancer, it is also called stage IV (four) cancer. The process by which cancer cells spread to other parts of the body is called metastasis.
The journey of cancer cells from the primary site to secondary sites happens when they enter the blood stream or the Lymph nodes. This movement also occurs in two different ways:
- Single Cancer cell entering the bloodstream (30 times more than clusters)
- A cluster of cancer cells entering the bloodstream, 2 to 7 cell clusters (50% more probability to form metastasis). United they stand and divided they fall