title: CT-guided iodine-125 seed permanent implantation for recurrent head and neck cancers.
abstract: BACKGROUND
  To investigate the feasibility, and safety of 125I seed permanent implantation for recurrent head and neck carcinoma under CT-guidance.
  
  
  RESULTS
  A retrospective study on 14 patients with recurrent head and neck cancers undergone 125I seed implantation with different seed activities. The post-plan showed that the actuarial D90 of 125I seeds ranged from 90 to 218 Gy (median, 157.5 Gy). The follow-up was 3 to 60 months (median, 13 months). The median local control was 18 months (95% CI, 6.1-29.9 months), and the 1-, 2-, 3-, and 5- year local controls were 52%, 39%, 39%, and 39%, respectively. The 1-, 2-, 3-, and 5- survival rates were 65%, 39%, 39% and 39%, respectively, with a median survival time of 20 months (95% CI, 8.7-31.3 months). Of all patients, 28.6% (4/14) died of local recurrence, 7.1% (1/14) died of metastases, one patient died of hepatocirrhosis, and 8 patients are still alive to the date of data analysis.
  
  
  CONCLUSIONS
  CT-guided 125I seed implantation is feasible and safe as a salvage or palliative treatment for patients with recurrent head and neck cancers.
authors.affiliation: Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, PR China.
authors.forename: Yu L
authors.initials: YL
authors.lastname: Jiang
authors.forename: Na
authors.initials: N
authors.lastname: Meng
authors.forename: Jun J
authors.initials: JJ
authors.lastname: Wang
authors.forename: Ping
authors.initials: P
authors.lastname: Jiang
authors.forename: Hui Sh
authors.initials: HSh
authors.lastname: Yuan
authors.forename: Chen
authors.initials: C
authors.lastname: Liu
authors.forename: Ang
authors.initials: A
authors.lastname: Qu
authors.forename: Rui J
authors.initials: RJ
authors.lastname: Yang
mesh_terms: D000328:Adult; D000368:Aged; D001918:Brachytherapy / Q000379:methods*; D005260:Female; D006258:Head and Neck Neoplasms / Q000401:mortality / Q000532:radiotherapy*; D006801:Humans; D007457:Iodine Radioisotopes / Q000627:therapeutic use*; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000401:mortality / Q000532:radiotherapy*; D010166:Palliative Care / Q000379:methods; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D055815:Young Adult
chemical_list: D007457:Iodine Radioisotopes