The percutaneous radiofrequency ablation technology can save patients from the pain of open surgery, and in situ ablation of tumor by percutaneous ultrasound guidance can achieve a radical effect, and patients can recover quickly after surgery without leaving scars, and the treatment effect can be comparable to surgical resection. Associate Professor Liang Huihong has participated in several researches on radiofrequency ablation for the treatment of liver cancer led by Professor Chen Minshan of Sun Yat-sen University Cancer Center. The research results have been cited by the International Comprehensive Cancer Network (NCCN) and are widely recognized internationally. 1.What is radiofrequency ablation? Radiofrequency (RF) is a certain frequency of electromagnetic wave, the frequency of medical RF is 460-500 KHz. medical RF electromagnetic wave can activate the polar molecules inside the tissue to generate electromagnetic oscillation and heat, the temperature can reach more than 100 degrees in a short period of time to inactivate the tumor tissue locally. This means of local physical high temperature inactivation of tumor is called radiofrequency ablation. Note: RF ablation electrode needle is inserted inside the liver tumor and the ablation electrode is unfolded. The radiofrequency ablation energy is emitted and the tumor is inactivated in situ by high temperature. 2. What is the difference between radiofrequency ablation and open surgery? Radiofrequency ablation is a physical minimally invasive treatment, which inactivates the tumor locally through specific high temperature, so that patients do not need to undergo surgery, the damage is smaller than that of open surgery, and the recovery after surgery is fast. It also does not have toxic side effects caused by chemotherapy, such as hair loss, vomiting, bone marrow transplantation, etc. There is no risk of radioactivity, such as radioactive hepatitis. Note: Radiofrequency ablation puncture point, patients do not need to open surgical scars, efficient and beautiful. Note: Traditional open surgery postoperative incision 3.Is the process of radiofrequency ablation painful? During the process of radiofrequency ablation, our department routinely adopts general anesthesia, and the patient is in a painless state during the treatment process, which is safe and easy to control breathing. Patients do not need to keep gastric tube and urinary catheter. After the operation, patients can eat and get out of bed when they are awake. 4.What kind of tumors can be treated by radiofrequency ablation? Generally speaking, the number of liver tumors is ≤3, and the diameter of each tumor is ≤5cm. The specific types of tumors are as follows: 1. primary liver cancer; 2. recurrent liver cancer; 3. central liver cancer with special growth site, which is not suitable for resection due to the difficulty of surgical resection and trauma; 4. small liver cancer combined with severe cirrhosis, and the liver function reserve function is difficult to tolerate 5.Patients who are afraid of surgical resection and do not cooperate; 6.Supplementary treatment of residual foci after transcatheter arterial embolization chemotherapy for liver cancer, combined with TACE and RFA can improve the rate of complete tumor necrosis; 7.Local control of tumor in liver transplant patients waiting for liver donor; 8.Metastatic liver cancer (metastases from stomach, colorectal, pancreatic, lung, breast, nasopharyngeal and other tumors to liver); 9.Metastases in liver metastases); 9, benign liver tumors (hepatic hemangioma, hepatic focal nodular hyperplasia FNH, hepatic adenoma). Note: Right posterior lobe of liver tumor, diameter 5.4cm, tumor is high density and rich blood supply before RF ablation Note: After RF ablation, tumor is uniform low density shadow, which shows that the tumor has been completely inactivated Note: Huge tumor of right lobe of liver, first arterial embolization chemotherapy and then RF ablation Note: Huge tumor of right lobe is completely necrotic after ablation 5. Recurrent hepatocellular carcinoma is the best indication for radiofrequency ablation. Since patients with hepatocellular carcinoma are routinely reviewed regularly after surgery, recurrent hepatocellular carcinoma is often found to be smaller, and the smaller the tumor is, the greater the possibility of complete ablation. Moreover, due to the polycentric nature of recurrent liver cancer, it is impossible for patients to have repeated surgeries due to the traumatic surgery and the small impact on liver function, especially for the elderly, repeated surgeries are more devastating. However, radiofrequency ablation can eliminate the pain of open surgery and achieve the same therapeutic effect as surgical resection. 6.What are the side effects of radiofrequency ablation? Radiofrequency ablation is a local physical ablation, safe and reliable, there is no radiotherapy toxic side effects. 7.Is there any radioactivity in radiofrequency ablation? Radiofrequency ablation is non-radioactive. 8.How is the effect of radiofrequency ablation in treating liver cancer? For tumor diameter within 5cm, the effect is basically the same as that of open surgery to achieve radical effect. Compared with open surgery, radiofrequency ablation is minimally invasive and has less impact on liver function, and the hospital stay is about 3-5 days. 9.Is the cost of radiofrequency ablation expensive? Can it be reimbursed? Radiofrequency ablation belongs to the medical insurance treatment items, and can be reimbursed according to the relevant policies of medical insurance.