title: Clinical efficacy of CT-guided iodine-125 seed implantation therapy in patients with advanced pancreatic cancer.
abstract: OBJECTIVE
  To examine the clinical efficacy of CT-guided radioactive iodine-125 (125I) seeds implantation treatment in patients with unresectable pancreatic cancer.
  
  
  METHODS
  Thirty-one patients with inoperable pancreatic cancer were enrolled in this study. The 125I seeds were implanted into pancreatic tumor under CT guidance. In addition, 10 patients received routine gemcitabine and 5-fluorouracil chemotherapy 1 week after brachytherapy. Median diameter of the tumor was 5.8 cm.
  
  
  RESULTS
  Follow-up period was 2 to 25 months. Symptoms of refractory pain were significantly resolved post-interventionally (P < 0.05), and Karnofsky physical score increased dramatically (P < 0.05). Tumor response which was demonstrated on repeated CT film 2 months post-treatment revealed complete response (CR) in 3 cases, partial response (PR) in 16 cases, stable disease (SD) in 9 cases, and progressive disease (PD) in 3 cases. Overall responding rate (CR+PR) was 61.3%. Median survival time for all patients was 10.31 months. Two seeds of radioactive 125I migrated to the liver in 2 patients. There were no serious complications detected during the follow-up period.
  
  
  CONCLUSIONS
  This study suggests that CT-guided brachytherapy using 125I seeds implantation appears to be safe, effective, uncomplicated, and could produce adequate pain relief for treating unresectable pancreatic cancer.
authors.affiliation: School of Radiation Medicine and Public Health, Soochow University, Suzhou, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Zhongmin
authors.forename: Liu
authors.initials: L
authors.lastname: Yu
authors.forename: Liu
authors.initials: L
authors.lastname: Fenju
authors.forename: Chen
authors.initials: C
authors.lastname: Kemin
authors.forename: Huang
authors.initials: H
authors.lastname: Gang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001918:Brachytherapy; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007457:Iodine Radioisotopes / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D010146:Pain; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy*; D011877:Radionuclide Imaging; D016019:Survival Analysis; D014057:Tomography, X-Ray Computed; D047368:Tumor Burden
chemical_list: D007457:Iodine Radioisotopes