1.What is minimally invasive interventional medicine for tumors? Minimally invasive interventional medicine for tumors is a minimally invasive medical method to diagnose or treat diseases under the guidance of medical imaging equipment (X-ray, CT, ultrasound, MRI), using puncture needles, catheters, guide wires, stents and other interventional equipment, integrating advanced medical imaging technology, drug therapy, biological and genetic technology and high technology (such as freezing, microwave, radiofrequency ablation, chemical ablation, etc.). It is a minimally invasive medical method for diagnosis or treatment. Minimally invasive interventional therapy for tumors is a minimally invasive medical method for diagnosis or treatment of diseases that integrates drug therapy, biology, genetic technology and high and new technology (such as freezing, microwave, radiofrequency ablation and chemical ablation). High safety and less complications. Minimally invasive interventional medicine for tumor includes: “irrigation, blocking, ventilation, elimination and extraction”. “Under the guidance of imaging equipment, a catheter is inserted into the nutrient artery of tumor from outside of body, and chemotherapeutic drugs equal to or less than the intravenous dose are infused into the tumor lesion, so that the tumor is locally infused with high concentration of chemotherapeutic drugs and the contact time between the drugs and tumor is prolonged, and the tumor tissue receives the impact killing effect of high concentration of chemotherapeutic drugs. It can kill the tumor cells or inhibit their growth, and at the same time, the toxic effects of chemotherapeutic drugs on other parts of the body are reduced, so it can improve the efficacy of tumor killing and reduce the toxic side effects of chemotherapeutic drugs. Application scope: primary and metastatic liver cancer, lung cancer, kidney cancer, head and neck malignant tumors, breast cancer, bladder cancer, prostate cancer, pancreatic cancer, gastrointestinal tract tumors, gynecological pelvic malignant tumors such as ovarian cancer, endometrial cancer, cervical cancer, malignant tumors of soft tissue origin. “Plugging”: It refers to inserting a catheter into the nutritive artery of the tumor and then injecting embolic agent (iodine oil, gelatin sponge, etc.) through the catheter to embolize the artery that feeds the tumor and cut off the nutritive source of tumor growth. This method is carried out simultaneously with infusion chemotherapy, and the two act synergistically to inactivate the tumor, which, in common parlance, means that the tumor loses nutrition and is “starved to death”. Because the growth of tumor depends on the nutrients and oxygen provided by blood supply vessels, once its blood supply vessels are blocked, the tumor will die when it loses its nutrient and oxygen supply. Application scope: Malignant tumors: primary and metastatic liver cancer, lung cancer, kidney cancer, head and neck malignant tumors, breast cancer, bladder cancer, prostate cancer, gynecological pelvic malignant tumors such as ovarian cancer, endometrial cancer, cervical cancer, pelvic tumors, pancreatic cancer, malignant tumors of soft tissue origin. Benign tumors: hepatic hemangioma, uterine fibroids, myometrium, embolization for hypersplenism and hyperthyroidism. Arterial embolization treatment for uterine fibroids can cut off the blood supply to the fibroids, shrink them, reduce the amount of menstrual bleeding, lower abdominal pain, masses or pressure symptoms such as frequent urination and constipation, while preserving the uterus so that the patient’s normal physiological and reproductive functions can be preserved. This method is less traumatic, leaves no scar, has fewer complications, quicker postoperative recovery, and shorter hospital stay. In recent years, uterine artery embolization has become one of the preferred treatment methods for symptomatic uterine fibroids in developed countries in Europe and the United States. Hemorrhage: including pelvic hemorrhage, hemoptysis, post-traumatic hepatic and renal hemorrhage, gastrointestinal hemorrhage, postpartum hemorrhage, etc. Arterial embolization, blocking the bleeding vessels with embolic substances, can rapidly stop the bleeding. It can cooperate with surgery and block the blood supply of tumor arteries through embolization for larger tumors to pave the way for surgical resection in order to reduce intraoperative bleeding and shrink the tumor, which helps to improve the rate of surgical resection. “Passage”: There are many natural ducts in human body, such as esophagus, bile duct, trachea, intestine, blood vessels, etc. When tumors grow in these parts, they will often block or compress these ducts, causing corresponding clinical symptoms. For example, esophageal cancer will cause difficulty in eating, and the scar of esophageal cancer after surgery and radiotherapy will cause narrowing and difficulty in eating and drinking, bile duct, stomach cancer and pancreatic cancer will block and compress the bile duct, which will prevent bile from draining and cause people to become “yellow” and itchy all over the body, trachea compression will cause difficulty in breathing, lung cancer and mediastinal lymphoma will compress the upper cavity, and lung cancer will compress the upper cavity. Venous vessels may cause congestion and edema in the face, neck, upper limbs and upper chest, and conjunctival edema in the eyes, as well as dyspnea, coughing, chest tightness and chest pain, etc. All these symptoms are caused by the failure of the corresponding ducts. Minimally invasive interventional medicine can reopen the inaccessible ducts by dilating the compressed ducts with balloons or placing stents to prop them up, which can rapidly relieve the symptoms of luminal stenosis, improve patients’ quality of life and physical status, and win the time for further treatment. Applications: esophageal cancer, post-operative anastomotic stenosis, esophagotracheal fistula, obstructive jaundice caused by bile duct cancer, pancreatic cancer, gastric cancer, etc., gastrointestinal obstruction stent implantation, tracheal stenosis, superior vena cava syndrome, inferior vena cava cancer embolism. “Ablation”: Ablation refers to percutaneous puncture to ablate tumor. Under the guidance of medical imaging equipment, the treatment instrument is precisely positioned on the tumor by percutaneous puncture, and the tumor tissue is destroyed by chemical or physical means, so as to achieve the purpose of treating tumor. It includes: percutaneous anhydrous alcohol ablation: percutaneous injection of anhydrous alcohol into the tumor to cause coagulative necrosis of the tumor; interventional treatment for liver and kidney cysts involves penetrating a fine needle into the cyst, extracting the cyst fluid, and then injecting alcohol, which can cause coagulation and denaturation of cyst wall cell proteins, cell destruction, hardening and closure of the cyst wall, and stop secreting cyst fluid to achieve the therapeutic purpose of shrinking or disappearing the cyst. This method is not only less painful and inexpensive, but also less likely to recur. Percutaneous implantation of radioactive particles, irradiating tumor in close proximity to the inside of the tumor, causing little damage to normal tissues; Percutaneous radiofrequency ablation: using radiofrequency electrode needle directly inserted into the tumor, through the exposed electrode needle, the positive and negative ions in the surrounding tissues produce high speed vibration and friction in the radiofrequency electric field, which is then converted into heat energy, and its heat energy gradually accumulates over time and conducts to the periphery, thus causing local tumor tissues to undergo thermal denaturation and The thermal energy accumulates gradually over time and is transmitted to the periphery, thus causing thermal degeneration and coagulative necrosis of local tumor tissue. Percutaneous argon-helium targeted surgical treatment system: referred to as argon-helium knife, the superconducting needle is percutaneously punctured into the tumor, using argon gas to rapidly cool down and cool down, and helium gas to rapidly warm up and heat up, and the treatment is carried out by direct cell fragmentation in the tumor tissue. Application scope: primary and metastatic liver cancer, primary and metastatic lung cancer, bone tumor, kidney cancer, pancreatic cancer, limb tumor, etc. “Taking”: As the name suggests, it is to remove tissues or foreign bodies from the human body, including techniques such as aspiration, extraction, cutting or removal. Pathology is the “gold standard” for diagnosing tumor diseases. Most of the tumors need to be diagnosed by obtaining the lesion tissue to reach the pathological diagnosis and then decide the different treatment methods. In the past, for deep human tumors, such as lung, liver, abdomen, etc., it is often necessary to cut some tissues for pathological biopsy, which is more traumatic for patients, and if it is a benign tumor or a malignant tumor requiring chemotherapy, the patient suffers a knife for nothing, and if it is a malignant tumor requiring surgery, the patient has to undergo another surgery to remove it, which is an additional knife before. Therefore, how to obtain a clear pathology through minimal damage is an important task for doctors before choosing a treatment plan for tumor patients. Through interventional method, a cutting needle is precisely punctured through the skin to reach the lesion site under CT guidance, and a small amount of tissue is cut for pathological examination. The “extraction” also includes the puncture and aspiration of abscesses or cysts in various areas, which refers to the interventional technique of entering the cavity of the lesion under imaging guidance, aspirating the cystic fluid or pus, and then injecting an inactivating agent or antibiotic solution for flushing. There is also percutaneous puncture and drainage of bile duct cholestasis, etc. Applications: biopsy of tumors in various areas, liver abscess, liver cyst, kidney cyst, pelvic, abdominal, thoracic and mediastinal effusion, obstructive jaundice, etc.