The more you know about the cancer, the better your chances of conquering it.
What is the Cancer?
Cancer is not one disease but at least 100 different types of diseases that can arise from any organ in the body. However, all these cancers have one thing in common- abnormal, out-of-control growth of cells that can ultimately spread to vital organs, such as the liver, lung, or brain.
Normally, human cells, which are the basic units of the body, grow, divide, and die in a predictable and orderly way. As our bodies grow and develop in childhood and adolescence, our cells divide rapidly.
Once we become adults, most cells divide only to replace dying cells or repair injuries.
Cancer cell are different. Because of genetic mutations (changes in the genetic code of a gene) caused by exposure to cancer-causing agents, they continue to grow and divide, even when your body does not need new cells. As the cancer cells grow and divide, they form a disorganized mass comprised of billions of cells called a growth or a tumor. A tumor can be harmful (malignant) or harmless (benign) to your body. A malignant tumor is cancer.
Benign tumors, such as warts, polyps, and cysts, can usually be removed from the body and most never return. Unlike cancer cells, they do not usually spread to other parts of the body. Cancer cells, however, can penetrate and damage adjacent organs and tissues, a process known as invasion. Cancer cells may also break away from a malignant tumor and spread to other parts of the body through the blood stream or lymphatic system, a process known as metastasis.
In some circumstances, a cancer can be lethal simply because it arises in a vital organ, such as the liver, lung, or the brain. Other cancers, such as a breast cancer or prostate cancer, may cause some local symptoms, and may be cure. but their real threat to life is their capacity to spread through lymph channels and blood vessel, grow in a vital organ or tissue, and eventually interfere with the normal function of that vital organ.