title: Adjuvant chemoradiotherapy after curative resection for extrahepatic bile duct cancer: a long-term single center experience.
abstract: OBJECTIVE
  To analyze the outcome of adjuvant chemoradiotherapy for patients with extrahepatic bile duct (EHBD) cancer, and to identify the prognostic factors for these patients.
  
  
  METHODS
  Between January 1995 and December 2002, 86 patients with adenocarcinoma of EHBD underwent curative resection followed by adjuvant chemoradiotherapy. There were 59 male and 27 female patients, and median age was 59 years (range, 34 to 73 y). Postoperative radiotherapy was delivered to tumor bed and regional lymph nodes up to 40 Gy at 2 Gy/fraction with a 2-week planned rest. Intravenous 5-fluorouracil (500 mg/m(2)/d) was given on day 1 to 3 of each split course. The median follow-up period was 83 months for survivors.
  
  
  RESULTS
  Forty-eight patients failed the treatment: locoregional recurrence in 20, distant metastasis in 38, and both locoregional and distant relapses in 10 patients. Five-year locoregional relapse-free survival rate was 70.3%. On multivariate analysis, resection margin status was the only significant prognosticator (P=0.0299). Five-year distant metastasis-free survival rate was 53.6%. Three or more involved lymph nodes had an adverse impact on distant metastasis-free survival (P=0.0334). Five-year overall survival rate was 44.7%, and poorly differentiated tumor was associated with inferior overall survival (P=0.0297).
  
  
  CONCLUSIONS
  Adjuvant chemoradiotherapy after curative resection can achieve a long-term survival in patients with EHBD cancer. Resection margin status, number of involved lymph nodes, and histologic differentiation are associated with locoregional relapse, distant metastasis, and overall survival, respectively. Distant metastasis was the major pattern of failure, possibly due to the increased locoregional control by use of adjuvant chemoradiotherapy. Intensification of systemic treatment is warranted.
authors.affiliation: Departments of Radiation Oncology, Seoul National University College of Medicine, Republic of Korea.
authors.forename: Kyubo
authors.initials: K
authors.lastname: Kim
authors.forename: Eui Kyu
authors.initials: EK
authors.lastname: Chie
authors.forename: Jin-Young
authors.initials: JY
authors.lastname: Jang
authors.forename: Sun Whe
authors.initials: SW
authors.lastname: Kim
authors.forename: Sae-Won
authors.initials: SW
authors.lastname: Han
authors.forename: Do-Youn
authors.initials: DY
authors.lastname: Oh
authors.forename: Seock-Ah
authors.initials: SA
authors.lastname: Im
authors.forename: Tae-You
authors.initials: TY
authors.lastname: Kim
authors.forename: Yung-Jue
authors.initials: YJ
authors.lastname: Bang
authors.forename: Sung W
authors.initials: SW
authors.lastname: Ha
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000628:therapy*; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use*; D001650:Bile Duct Neoplasms / Q000473:pathology / Q000628:therapy*; D017734:Bile Ducts, Extrahepatic / Q000473:pathology / Q000601:surgery; D059186:Chemoradiotherapy, Adjuvant / Q000009:adverse effects; D018572:Disease-Free Survival; D004334:Drug Administration Schedule; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage; D005500:Follow-Up Studies; D006801:Humans; D053208:Kaplan-Meier Estimate; D002955:Leucovorin / Q000008:administration & dosage; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D016685:Mitomycin / Q000008:administration & dosage; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000517:prevention & control; D009367:Neoplasm Staging; D018365:Neoplasm, Residual / Q000175:diagnosis / Q000628:therapy; D011379:Prognosis; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D016685:Mitomycin; D002955:Leucovorin; D005472:Fluorouracil