It was first used for the treatment of liver cancer and was written into medical textbooks by the National Health and Family Planning Commission, and is known as one of the three major methods that can cure liver cancer, along with surgical resection and liver transplantation. Radiofrequency ablation was first used to treat liver cancer, which is a new technology from the United States. Radiofrequency surgery includes 3 steps of positioning, heating and needle ablation – under the image positioning, a 1.6mm diameter electrode needle is stabbed into the lesion area of liver cancer and heated by radiofrequency transmitter, instantly, the temperature of the needle reaches over 100℃, which “cooks” the liver tumor. In an instant, the temperature of the needle reaches more than 100℃ to “cook” the liver tumor. When the tumor is cooked, even if the liver is removed, it will not bleed. “If it is liver cancer tissue less than 3 cm in diameter, the liver can be removed without removing the liver, and the focal tissue is burned through to completely kill the tumor cells.” In addition, radiofrequency ablation forms a spherical coagulation necrosis zone around the ablation electrode, and the coagulated necrotic tissues are partially absorbed by the body, and the properties of these tissues change to have special anti-cancer effects that strengthen the patient’s immune function. The incision is only the size of a needle’s eye, and a Band-Aid can be applied after surgery. Radiofrequency ablation therapy is one of the more popular minimally invasive tumor treatment methods in the world recently, “It is not quite accurate to say that it is minimally invasive surgery. And laparoscopic, thoracoscopic and other minimally invasive surgery, will also leave five or six 1 cm diameter incisions.” Small surgical trauma is very advantageous for a surgical procedure. Less trauma means less blood loss, fewer post-operative complications, less of a blow to the patient and a higher chance of recovery. Some surgical procedures can indeed remove the tumor completely. Take liver cancer surgery as an example, conventional surgical resection requires an “L-shaped” incision of more than 40 centimeters in the patient’s abdomen, which is a painful thing just for wound healing, and the patient may have to lie in bed for more than half a month. Moreover, the liver is a very rich blood supply organ, and if there is heavy bleeding during surgery, the patient’s life will be in danger. In addition, compared with traditional adjuvant tumor treatments such as radiotherapy, radiofrequency ablation has exact efficacy and strong therapeutic target, and it also does not have side effects such as nausea, vomiting, hair loss and white blood cell reduction caused by radiotherapy. For a treatment method, what tumor patients are most concerned about is how about the cure rate. There is a unified understanding in the international and domestic medical community that the survival rates of patients with 3, 5 and 10 years for radiofrequency ablation treatment and surgical treatment of small liver cancer are basically the same. The youngest patient with liver cancer treated by radiofrequency ablation is 6 years old and the oldest is 93 years old. The hospital can also do radiofrequency followed by liver resection, where the liver is radiofrequency first for 10 seconds, and the liver will hardly bleed during the surgery. The combination of radiofrequency ablation and liver cancer resection with bloodless liver cutting has many benefits, firstly, the tumor will not metastasize due to extrusion, the recurrence rate is low, and the surgery is less bleeding, less traumatic, and the patient recovers quickly; there is no need to block the blood flow to the liver, and there is no impact on the normal liver. Of course, not all liver cancer patients are suitable for radiofrequency ablation treatment. Radiofrequency ablation treatment is suitable for smaller liver cancer. The principle is like burning food in microwave oven, the food is small in size and cooked at once. Food with large volume is less likely to be cooked and easily burnt on one side, so surgery is still an option for large liver cancer. The ablation range of single radiofrequency electrode needle is 3-5 cm in diameter. For liver cancer below 3 cm, radiofrequency ablation can completely cover the tumor and the treatment effect is the best; for liver cancer of 3-5 cm, the chance of completely ablating the tumor at one time decreases and the treatment effect is worse than that of liver cancer below 3 cm, so we can judge whether to use radiofrequency ablation treatment according to the situation; while for liver cancer above 5 cm, surgery is still recommended to remove it. Some small liver cancer patients with severe cirrhosis, diabetes, cardiovascular disease, and those who are older and cannot tolerate surgery are also more suitable for radiofrequency ablation treatment. Radiofrequency ablation surgery is also effective for metastatic tumors, and ZMC II has applied this technology to solid organ tumors such as lung cancer, pancreatic cancer, thyroid cancer and kidney cancer. Generally speaking, solid tumors can be treated by “burning off”. If the tumor is detected early, 1/3 to 1/2 of the tumor patients can be treated with radiofrequency ablation surgery.