BACKGROUND: This study was conducted to investigate the influence of therapeutic parameters on local control (LC) in the sphincter-conserving treatment of T2-T3 anal carcinoma. METHODS: From 1976 to 1993, 137 patients with anal carcinoma classified as T2 (85 patients) or T3 (52 patients) were treated curatively by radiotherapy (RT) alone (54 patients) or by concomitant chemotherapy and RT (83 patients). RT was delivered in two sequences, with a median gap of 46 days between the sequences. The first sequence was delivered at a median dose of 39.6 gray (Gy) using megavoltage photon beams. Boost treatment consisted of either 192Ir implantation or external beam RT (median dose, 20 Gy). Chemotherapy started on Day 1 and generally consisted of 1 cycle of mitomycin C (10 mg/m2) and a 5-day infusion of 5-fluorouracil (600-800 mg/m2/day). For surviving patients, median follow-up was 83 months. Univariate and multivariate analyses were performed to determine therapeutic parameters affecting LC after adjustment for clinical factors. RESULTS: The 5-year actuarial LC was 76%. Factors associated with poorer LC (univariate) were as follows: age < 66 years (LC was 67% with the factor vs. 85% without), male gender (65% vs. 81%), tumor extent > 1/3 canal circumference (67% vs. 90%), lymph node involvement (64% vs. 81%), use of external beam boost (62% vs. 79%), and overall treatment time (OTT) > or = 75 days (69% vs. 85%). In multivariate analysis, no therapeutic parameters remained significant when adjusted for significant clinical factors, although OTT was of borderline significance (P = 0.09). CONCLUSIONS: The results of this multivariate analysis suggest that therapeutic factors have a less marked effect on LC compared with clinical parameters; the only factor that appeared to have some effect was OTT. Efforts to improve LC in patients with poor prognoses should concentrate on optimizing OTT and the chemotherapeutic aspects of treatment (in other words, attempts should be made to provide more effective agents and optimize scheduling).
BACKGROUND: This study was conducted to investigate the influence of therapeutic parameters on local control (LC) in the sphincter-conserving treatment of T2-T3 anal carcinoma. METHODS: From 1976 to 1993, 137 patients with anal carcinoma classified as T2 (85 patients) or T3 (52 patients) were treated curatively by radiotherapy (RT) alone (54 patients) or by concomitant chemotherapy and RT (83 patients). RT was delivered in two sequences, with a median gap of 46 days between the sequences. The first sequence was delivered at a median dose of 39.6 gray (Gy) using megavoltage photon beams. Boost treatment consisted of either 192Ir implantation or external beam RT (median dose, 20 Gy). Chemotherapy started on Day 1 and generally consisted of 1 cycle of mitomycin C (10 mg/m2) and a 5-day infusion of 5-fluorouracil (600-800 mg/m2/day). For surviving patients, median follow-up was 83 months. Univariate and multivariate analyses were performed to determine therapeutic parameters affecting LC after adjustment for clinical factors. RESULTS: The 5-year actuarial LC was 76%. Factors associated with poorer LC (univariate) were as follows: age < 66 years (LC was 67% with the factor vs. 85% without), male gender (65% vs. 81%), tumor extent > 1/3 canal circumference (67% vs. 90%), lymph node involvement (64% vs. 81%), use of external beam boost (62% vs. 79%), and overall treatment time (OTT) > or = 75 days (69% vs. 85%). In multivariate analysis, no therapeutic parameters remained significant when adjusted for significant clinical factors, although OTT was of borderline significance (P = 0.09). CONCLUSIONS: The results of this multivariate analysis suggest that therapeutic factors have a less marked effect on LC compared with clinical parameters; the only factor that appeared to have some effect was OTT. Efforts to improve LC in patients with poor prognoses should concentrate on optimizing OTT and the chemotherapeutic aspects of treatment (in other words, attempts should be made to provide more effective agents and optimize scheduling).
Authors: Jyoti Parikh; Aidan Shaw; Lee A Grant; Alexis M P Schizas; Vivek Datta; Andrew B Williams; Nyree Griffin Journal: Eur Radiol Date: 2010-10-03 Impact factor: 5.315
Authors: Edgar Ben-Josef; Jennifer Moughan; Jaffer A Ajani; Marshall Flam; Leonard Gunderson; JonDavid Pollock; Robert Myerson; Rani Anne; Seth A Rosenthal; Christopher Willett Journal: J Clin Oncol Date: 2010-10-18 Impact factor: 44.544
Authors: Christoph Oehler; Sawyna Provencher; David Donath; Jean-Paul Bahary; Urs M Lütolf; I Frank Ciernik Journal: Radiat Oncol Date: 2010-05-13 Impact factor: 3.481
Authors: Stefan Janssen; Jürgen Meier zu Eissen; Gerd Kolbert; Michael Bremer; Johann Hinrich Karstens; Andreas Meyer Journal: Int J Colorectal Dis Date: 2009-08-01 Impact factor: 2.571
Authors: Matthew Susko; Chia-Ching Jackie Wang; Ann A Lazar; Stephanie Kim; Angela Laffan; Mary Feng; Andrew Ko; Alan P Venook; Chloe E Atreya; Katherine Van Loon; Mekhail Anwar Journal: Oncologist Date: 2020-06-04
Authors: Alain Sermier; Pascal Gervaz; Jean F Egger; My Dao; Abdelkarim S Allal; Marta Bonet; Philippe Morel Journal: World J Surg Oncol Date: 2006-06-02 Impact factor: 2.754