Tumor is a disease that seriously threatens human health. It has an ancient origin, and its records can be traced back at least 3000 years ago.

　　China In the Yin and Shang Dynasties, the name of "tumor" was already inscribed on Oracle inscriptions; and the "Sore Experience Book" by Dou Hanqing in the Song Dynasty described such malignant breast tumors. Twist is like a rock in the mountain, so it is known that it will be cured if it is cured early, and it will die if it is seen in the internal organs. " However, ancient people''s views on such diseases were purely empirical.

　　 Until modern times, because of the microscope, people began to have a deeper understanding of tumors, and have the opportunity to gradually demystify the occurrence and development of tumors.

　　Tumor is a disease caused by the abnormal proliferation of human own cells. Under the action of various internal and external factors, a certain cell of the local tissue loses the normal regulation of its growth at the genetic level, resulting in A lesion formed by clonal abnormal hyperplasia. In the academic world, tumors are generally divided into two types: benign and malignant.

　　Under normal circumstances, the proliferation and decay of human cells are carried out in an orderly and controlled manner, and are regulated by various aspects, so the human body Various tissues and organs can work in coordination with each other. Even in the repair process after severe trauma, the proliferation of body cells is limited to a certain degree and within a certain period of time. This is called normal hyperplasia.

　　When affected by certain factors, the cells of a certain organ or tissue of the human body have detached from the original restriction mechanism, proliferating and growing out of control like a wild horse, and "mistakes the cell morphology and function" "Going astray", which formed a tumor.

Popularly speaking, if all kinds of infectious diseases are regarded as invasion of the human body by external organisms, then the tumor is a "treason" of human own cells, which poses a serious threat to health and life.