title: [Radiofrequency (RF) ablation for liver metastases of colorectal cancer].
abstract: OBJECTIVE
  To evaluate the effectiveness of radiofrequency ablation (RFA) for liver metastases of colorectal cancer.
  
  
  METHODS
  RFA was used to treat 31 tumors (median diameter 1.5 cm, range 0.5-3.9 cm) in 13 patients of liver metastases of colorectal cancer. The median number of tumors treated per patient was 2. 9 (range, 1-10).
  
  
  RESULTS
  Two patients had complications; bleeding and liver dysfunction. Four (12.9%) of 31 lesions developed a local recurrence after the treatment. We achieved a local control in 2 (92.6%) of 27 lesions <3.0 cm in diameter. In 4 (30.8%) of 13 patients, new metastases were observed at follow-up. One year survival rate from the initial ablation was 92.3% and 2-year was 46.2%. One year total local recurrence rate from the initial ablation was 55.6%.
  
  
  CONCLUSIONS
  In the case of tumor greater than 3 cm, RF ablation is an effective method to treat hepatic metastases from colorectal carcinoma.
authors.affiliation: Dept. of Surgery, Sasebo Chuo Hospital.
authors.forename: Yu
authors.initials: Y
authors.lastname: Shigemasa
authors.forename: Teruhisa
authors.initials: T
authors.lastname: Shimizu
authors.forename: Kouki
authors.initials: K
authors.lastname: Wakata
authors.forename: Takafumi
authors.initials: T
authors.lastname: Kusaba
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Hatano
authors.forename: Keiji
authors.initials: K
authors.lastname: Kajihara
authors.forename: Nobufumi
authors.initials: N
authors.lastname: Sasaki
authors.forename: Hideki
authors.initials: H
authors.lastname: Ikari
authors.forename: Tadaomi
authors.initials: T
authors.lastname: Kunizaki
authors.forename: Noboru
authors.initials: N
authors.lastname: Kinoshita
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017115:Catheter Ablation / Q000009:adverse effects; D015179:Colorectal Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D011183:Postoperative Complications; D016896:Treatment Outcome