Cancer Definition

Cancer is a disease caused by the growth of tissue cells that are not normal. Cancer cells grow rapidly, uncontrollably, and will continue to divide, then infiltrate into surrounding tissues (invasive) and continues to spread through the connective tissue, blood, and attack vital organs and spinal cord. Under normal circumstances, cells will divide only if there is a replacement of cells that are dead and damaged. In contrast to cancer cells continue to divide even though the body does not need it, so it will happen accumulation of new cells, called a malignant tumor. Cumulation of these cells and damage normal tissue urgent, and disturbing the organs they occupy. Cancer can occur in various networks in various organs in each body, from feet to head. When cancer occurs at the surface of the body, will be easily detected and treated. However, when occurring in the body, the cancer will be difficult to know, and sometimes - sometimes have no symptoms. If symptoms develop, usually so difficult to treat advanced stage.