RESUMEN
Objective To discuss the commonly used puncturing approaches in CT-guided 125I seed implantation for lumbar lymph node metastases in order to provide safe and reliable technical guidance for clinical practice.Methods Under CT guidance,125I seed implantation for lumbar lymph node metastases was performed.According to different locations of metastatic lymphadenopathy (left waist,right waist or middle waist),the corresponding puncture route and implantation method were adopted.Meanwhile,different puncturing approach was designed in order to avoid damage to vital organs.Results For the performance of 125I seed implantation for the lymphadenopathy located at the left waist,right waist and middle waist,the commonly used puncturing approaches were percutaneous transthoracic lumboiliac costal muscle method (i.e.back approach),trans-hepatic trans-duodenal method (i.e.lateral approach) or back approach method,and trans-mesenteric approach together with coaxial needle method (i.e.anterior approach) respectively.Conclusion It is clinically feasible to use different puncturing approaches in performing 125I seed implantation for lumbar lymph node metastases,the suitable puncturing approach can ensure a successful and safe operation.