title: Clinical Effect of Percutaneous Radiofrequency Ablation for Residual Lung Metastases from Breast Cancer After Systemic Chemotherapy.
abstract: OBJECTIVE
  To determine the clinical effect of Radiofrequency Ablation (RFA) for residual lung metastases from breast cancer after systemic chemotherapy.
  
  
  METHODS
  An experimental study.
  
  
  METHODS
  The Second Affiliated Hospital of Soochow University, Suzhou, Fudan University Shanghai Cancer Center, Shanghai, China, from January 2008 to October 2014.
  
  
  METHODS
  Thirty-five breast cancer patients with 67 pulmonary metastases were involved in this study. All lesions were treated by RFA and followed by CT-scan. Primary endpoint of this clinical study was local control; secondary endpoints were overall survival and treatment-related toxicities.
  
  
  RESULTS
  Complete Response (CR) was observed in 59 lesions, with Partial Response (PR) in 4 lesions, Stable Disease (SD) in 1 lesion and Progression Disease (PD) in 3 lesions. The lesion diameter > 2 cm was related to poor local control (p=0.04). The median Overall Survival (OS) was 33 months (95%CI: 21.6 - 44.4). One-, 2-, and 3-year OS rates were 88.6%, 59.3% and 42.8% respectively. The mumber of pulmonary metastases (≥2), the diameter of lesion (> 2 cm) and coexisting with liver metastases were significantly correlated to poor OS by multivariate analysis. Log-rank test showed statistically significant difference of OS in diameter of lesion and coexisting with other metastases.
  
  
  CONCLUSIONS
  RFA is a promising treatment option for patients with residual lung metastases from breast cancer after systemic chemotherapy in selected patients.
authors: Department of Radiation Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China.
authors: Yizong
authors: Y
authors: Wang
authors: Department of Radiation Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China.
authors: Xueguan
authors: X
authors: Lu
authors: Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.
authors: Ying
authors: Y
authors: Wang
authors: Department of Interventional Radiology, Qilu Hospital (Qingdao) of Shandong University, Qingdao, Shandong 266035, P.R. China.
authors: Jun
authors: J
authors: Zhou
mesh_terms: D055011:Ablation Techniques / Q000379:methods*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D017115:Catheter Ablation; D002681:China; D018450:Disease Progression; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008113:Liver Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D015996:Survival Rate; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome