肿瘤和发病人群（Tumor and disease population）.doc

肿瘤和发病人群（Tumor and disease population） The harmfulness of malignant tumor Seriousness Rising trend Cancer, disease and death all over the world, Guangdong, China 7 million and 130 deaths in 2010, 70 thousand The incidence was 10 million and 160, 000, 90 thousand There are 14 million and 200 cases and 130 thousand deaths in China 19 billion 941 million 300 thousand 20 billion 1 million 400 thousand 20 billion 252 million 700 thousand alive today in a population of 1 billion 200 million is expected to die of cancer tumor 200 million is a common disease, but also great harm, the dreaded disease, malignant tumor commonly known as cancer ) is second only to cardiovascular disease ranks second in the high death rate of the disease caused by human. 1 out of every 8 people around the world have cancer in their lives. The United States has about 122 new cancer patients this year, and 1 million 300 thousand of the skin cancers have not been counted. In the United States, 1 out of every 4 deaths have died from cancer. About 550 thousand people die of cancer in the United States each year, or 1500 people die of cancer each year. 1 million 600 thousand new cases are reported each year, 1 million 300 thousand of them died of cancer, 1 of every 5 deaths are cancer, and about 2000000 of the current cancer patients. Definition of tumor The tumor is the long-term effect factors in various harmful human tissue cells by gene mutation, expression regulation, disorder, caused excessive proliferation and abnormal differentiation of new biological or vegetations, often in the form of clinical tumor. This new organism is not the growth of the organism or the growth or growth of the normal tissues. It has lost the function of normal tissue cells, and destroyed the original organs and tissues, thus endangering life. The three common characteristics of malignant tumors are autonomic growth Invasive growth and metastasis formation The characteristics of a cancer cell that can be passed to its da