Tuesday, December 20, 2011

The Origins of Cancer

Cancer begins in cells, which is the basic unit of life. Our body consists of various cell types. Some cells grow and divide with a useful control to make the body healthy. When old or damaged cells, the cell will be replaced with new cells.

But sometimes this process does not correspond to normal, the genetic material present in the cell (DNA) may be corrupted or changed. A mutation that gives a change in cell growth, when this happens the cells do not die as cells normally and the new one does not replace the dead cells. 

Tues These extra that can be grown in tissue becomes a tumor. Tumor growth here is a biological tissue that is not normal. Growth can become malignant (malignant) or benign (benign). A benign tumor is not cancerous, these tumors are easily removed surgically, and most do not grow anymore stelah removed and not spread to other limbs. 

Conversely, malignant tumors are cancer. Tumor cells can spread on nearby tissues and spread to other parts of the body. The spread of cancer cells to other parts of the body is called metastasis.