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Presentation
Extended vs. Small Field Irradiation in High Risk Post Esophagectomy Patients Receiving Combined Chemoradiation Therapy: A Decade Experience in Treatment of Esophageal Cancer
Oncology Presentations
  • Edward Yu, University of Western Ontario
  • Patricia Tai, Allan Blair Centre, Regina, SK
  • George Rodrigues, University of Western Ontario
  • Robert Ash, London Health Science Centre, London, ON
  • Larry Stitt, University of Western Ontario
  • Rashid A. Dar, University of Western Ontario
  • Pauline Truong, B.C. Cancer Agency, Victoria, BC
  • Gregory M. Videtic, Cleveland Clinic Foundation, Cleveland, OH
  • Richard Malthaner, University of Western Ontario
  • Richard Inculet, University of Western Ontario
  • Anna Tomiak, Kingston Regional Cancer Centre, Kingston, ON
  • Jawaid Younus, University of Western Ontario
  • Brian Dingle, University of Western Ontario
  • Walter Kocha, London Health Science Centre, London, ON
  • Mark Vincent, University of Western Ontario
Document Type
Presentation
Publication Date
1-1-2005
Disciplines
Abstract
OBJECTIVE: To assess the impact of extended field irradiation with anastomotic coverage on local recurrence in high risk resected esophageal cancerpatients. METHODS: From 1989-1999, high risk resected esophageal cancer cases receiving post-resection chemoradiation were reviewed. Adjuvant chemotherapy consisted of four cycles of fluorouracil-based regimens. Loco-regional irradiation with or without coverage of anastomotic site had radiation a dose range from 45-60 Gyat 1.8-2.0 Gy/fraction given with initial anterior-posterior/posterior-anterior arrangement with either extended (with anastomotic coverage), or small (without anastomotic coverage) field followed by oblique fields for boost. RESULTS: One hundred eighty-eight charts were reviewed. Seventy-two patients were eligible for post-resection chemoradiation. Three patients had disease progression prior to therapy, and 69 patients were analyzed. The median age was 60 years (range 35-82 years) with 94% T2-3N1 and 65% were adenocarcinoma. As of January 2005 median followup was 30.5 months (range 3-142 months), the two-and five-year overall survival rates were 50% and 31%, respectively. First relapse rate after adjuvant therapy was 71% (n=49) and median time to relapse was about 30 months. Loco-regional relapse with small field was 25/35 (71.4%) and 2/14 (14.2%) with extended field (P<0.001). Recurrence locally to anastomosis or adjacent site was 10/35 (28.6%) with small field and 0/14 (0%) with extended field (P=0.04). CONCLUSION: At a minimum of 5-year followup, there is significant decrease in loco-regional relapse with the use of extended field in high risk resected esophageal cancer patients. This important improvement trend deserves further exploration in prospective randomized clinical trials.
Notes
Presentation at the Canadian Association of Radiation Oncologists (CARO) Annual Scientific Meeting in Victoria, BC in 2005
Citation Information
Edward Yu, Patricia Tai, George Rodrigues, Robert Ash, et al.. "Extended vs. Small Field Irradiation in High Risk Post Esophagectomy Patients Receiving Combined Chemoradiation Therapy: A Decade Experience in Treatment of Esophageal Cancer" (2005)
Available at: http://works.bepress.com/edwardyu/33/