Radiofrequence ablation of liver cancers

摘要： <正> Primary and secondary malignant liver cancers are some ofmost common malignant tumors in the world.Chemotherapy and radiotherapy are not very effectiveagainst them.Surgical resection has been considered theonly potentially curtive option,but the majority of patientsare not candidates for resection because of tumor size,location near major intrahepatic blood vessels and bileducts,precluding a margin-negative resection,cirrhotic,hepatitis virus infection or multifocial.Radiofrequenceablation(RFA),which is a new evolving effective andminimally invasive technique,can produce coagulativenecrosis of malignant tumors.RFA should be usedparcutaneously,laparscopically,or during the openlaparotomy under the guidance of ultrasound,CT scan andMRI.RFA has lots of advantages superior to other localtherapies including lower complications,reduced costs andhospital stays,and the possibility of repeated treatment.Ingeneral,RFA is a safe,effective treatment for unresectablemalignant liver tumors less than 7.0 cm in diameter.Wereview the principle,mechanism,procedures andexperience with RFA for treating malignant liver tumors. （共7頁(yè)）