Friday, July 30, 2010

INTRODUCTION TO CANCER

Facts about Cancer

Cancer is the universal term doctors use to cover more than 200 conditions. Cancer that starts in any organ or body part is called the primary cancer. While cancer that infected from body organ to a distant organ known as Metastatic cancer. Certain types of cancer, such as rodent ulcers of the skin are so small that even can be treated by painless surgical in minutes. Others are so malicious even before any symptoms occur, the disease will oppose any form of treatment. The regular lung cancer caused by smoking is difficult and often impossible to treat this type.
Tissues of the body are composed from millions of cells that remain confined to a small area in particular organ parts. The reproducing growth is very slow to fight with the cell death that occurs regularly. Liver cells grow very slowly, just to compensate for wear. But if a piece of liver is eradicated, the adjacent cells will proliferate rapidly regenerate liver tissue until the deficit is reinstate. Unlike normal cells, cancer cells replication is rapid and uncontrolled and often moving in the tissues of different organs.
The word tumour is not necessarily cancer. There are two categories: benign and malignant. Benign tumours are not cancerous, but it is actually a lump of cells from the same tissues that grown more than the usual and remains as a lump. In the case of malignant tumours, cells of the tumour are not similar as the tissues cells from which it arose. The cells cause various tumours and abnormal cells. Malignant tumours are the collection of cells that have mutated their DNA genetic material. A number of factors donated to DNA mutation, such as chemicals, radiation, viruses, etc.