RT Journal Article T1 Postchemoradiation laparoscopic resection and intraoperative electron-beam radiation boost in locally advanced rectal cancer: Long-term outcomes T2 A1 Calvo Manuel, Felipe Ángel A1 Sole, Claudio V. A1 Serrano Andreu, Francisco Javier A1 Rodriguez, Marcos A1 Marcos, Francisco A1 Muñoz Calero, Alberto A1 Zorrilla, Jaime A1 López Baena, José Ángel A1 Diaz Zorita, Benjamín A1 García Sabrido, José Luis A1 Valle Hernández, Emilio Del AB Background: In selected patients with rectal cancer, laparoscopic surgery is as safe as open surgery, with similar resection margins and completeness of resection. In addition, recovery is faster after laparoscopic surgery. We analyzed long-term outcomes in a group of patients with locally advanced rectal cancer (LARC) treated with preoperative therapy followed by laparoscopic surgery and intraoperative electron-beam radiotherapy (IOERT).Methods and materials: From June 2005 to December 2010, 125 LARC patients were treated with 2 induction courses of FOLFOX-4 (oxaliplatin 85 mg/m(2)/d1, intravenous leucovorin at 200 mg/m(2)/d1-2, and an intravenous bolus of 5-fluorouracil 400 mg/m(2)/d1-2) and preoperative chemoradiation (4,500-5,040 cGy) followed by total mesorectal excision (laparoscopic, 35 %; open surgery, 65 %) and a presacral boost with IOERT.Results: Patients in the laparoscopic surgery group lost less blood (median 200 vs 350 mL, p < 0.01) and had a shorter hospital stay (7 vs 11 days; p = 0.02) than those in the open surgery group. Laparoscopic procedures were shorter than open surgery procedures (270 vs 302 min; p = 0.67). Postoperative morbidity (32 vs 44 %; p = 0.65), RTOG grade ≥3 acute toxicity (25 vs 25 %; p = 0.97), and RTOG grade ≥3 chronic toxicity (7 vs 9 %; p = 0.48) were similar in the laparoscopy and open surgery groups. The median follow-up time for the entire cohort of patients was 59.5 months (range 7.8-90); no significant differences were observed between the groups in locoregional control (HR 0.91, p = 0.89), disease-free survival (HR 0.80, p = 0.65), and overall survival (HR 0.67, p = 0.52).Conclusions: Postchemoradiation laparoscopically assisted IOERT is feasible, with an acceptable risk of postoperative complications, shorter hospital stay, and similar long-term outcomes when compared to the open surgery approach. PB Springer SN 0171-5216 YR 2013 FD 2013 LK https://hdl.handle.net/20.500.14352/112111 UL https://hdl.handle.net/20.500.14352/112111 LA eng NO Calvo FA, Sole CV, Serrano J, Rodriguez M, Marcos F, Muñoz-Calero A, Zorrilla J, Lopez-Baena JA, Diaz-Zorita B, García-Sabrido JL, del Valle E. Postchemoradiation laparoscopic resection and intraoperative electron-beam radiation boost in locally advanced rectal cancer: long-term outcomes. J Cancer Res Clin Oncol. 2013 Nov;139(11):1825-33. doi: 10.1007/s00432-013-1506-1 NO Ministerio de Ciencia e Innovación (España) NO Instituto de Salud Carlos III (España) DS Docta Complutense RD 14 dic 2025