The history of using heat to treat tumors The earliest history of using heat to treat tumors can be traced back to 5000 BC, when an ancient Egyptian physician named Edwin Sminth recorded in his manuscript that he had used heating to treat breast tumors. In 1866, a doctor named Busch discovered that a patient suffering from soft tissue sarcoma of the face had a fever of 40℃ after contracting dermatitis and the tumor miraculously subsided. In the twentieth century, heat therapy for tumors developed rapidly. In order to verify the efficacy of heating treatment for tumors, the United States organized several hospitals in China to observe thousands of patients from 1977 to 1983, and finally achieved good results. Therefore, in 1985, the FDA (Food and Drug Administration) approved the use of heat therapy for the treatment of tumors. At present, many countries such as the United States, China, Japan and France have produced and put into clinical use thermotherapy for many years. However, there is an essential difference between the heat therapy machine used for tumor treatment and “physical therapy” and “heat therapy” used for benign diseases, which must not be confused with each other! Why can radiofrequency heat therapy treat tumor? The blood vessels in tumor tissues have the following characteristics: ① rough and disordered vascular structure, tortuous and twisted; ② small blood vessels have no muscle layer, lack of elasticity and easy to rupture; ③ capillaries are actually blood sinus-like gaps, which are usually in an open state and do not expand when the temperature rises and the blood flow does not increase; ④ tumor compression of blood vessels is easy to form occlusion; ⑤ vascular nerve sensation is not sound and the response to temperature is poor, etc. Therefore, the blood flow of tumor is slow and the blood flow of tumor is slow. Therefore, the blood flow rate of tumor is slow and low, usually only 10% of normal tissue, so it is not easy to dissipate heat, so the temperature after heating can be 5-10 degrees higher than normal tissue. When the temperature of tumor tissue rises to the effective treatment temperature and is maintained for a period of time, it causes tumor cell growth arrest and death, while there is no obvious damage and side effects to normal tissue cells. Heat therapy can also improve the immune function of the body. It can play a very good synergistic effect with radiotherapy and chemotherapy.