Systematic Pelvic Lymphadenectomy vs No Lymphadenectomy in Early-Stage Endometrial Carcinoma: Randomized Clinical Trial
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Auteurs : Pierluigi Benedetti Panici [Italie] ; Stefano Basile ; Francesco Maneschi ; Andrea Alberto Lissoni ; Mauro Signorelli ; Giovanni Scambia ; Roberto Angioli ; Saverio Tateo ; Giorgia Mangili ; Dionyssios Katsaros ; Gaetano Garozzo ; Elio Campagnutta ; Nicoletta Donadello ; Stefano Greggi ; Mauro Melpignano ; Francesco Raspagliesi ; Nicola Ragni ; Gennaro Cormio ; Roberto Grassi ; Massimo Franchi ; Diana Giannarelli ; Roldano Fossati ; Valter Torri ; Mariangela Amoroso ; Clara Croc ; Costantino MangioniSource :
- Journal of the National Cancer Institute [ 0027-8874 ] ; 2008.
Abstract
Background Pelvic lymph nodes are the most common site of extrauterine tumor spread in early-stage endometrial cancer, but the clinical impact of lymphadenectomy has not been addressed in randomized studies. We conducted a randomized clinical trial to determine whether the addition of pelvic systematic lymphadenectomy to standard hysterectomy with bilateral salpingo-oophorectomy improves overall and disease-free survival. Methods From October 1, 1996, through March 31, 2006, 514 eligible patients with preoperative International Federation of Gynecology and Obstetrics stage I endometrial carcinoma were randomly assigned to undergo pelvic systematic lymphadenectomy (n 264) or no lymphadenectomy (n 250). Patients clinical data, pathological tumor characteristics, and operative and early postoperative data were recorded at discharge from hospital. Late postoperative complications, adjuvant therapy, and follow-up data were collected 6 months after surgery. Survival was analyzed by use of the log-rank test and a Cox multivariable regression analysis. All statistical tests were two-sided. Results The median number of lymph nodes removed was 30 (interquartile range 2242) in the pelvic systematic lymphadenectomy arm and 0 (interquartile range 00) in the no-lymphadenectomy arm (P < .001). Both early and late postoperative complications occurred statistically significantly more frequently in patients who had received pelvic systematic lymphadenectomy (81 patients in the lymphadenectomy arm and 34 patients in the no-lymphadenectomy arm, P .001). Pelvic systematic lymphadenectomy improved surgical staging as statistically significantly more patients with lymph node metastases were found in the lymphadenectomy arm than in the no-lymphadenectomy arm (13.3% vs 3.2%, difference 10.1%, 95% confidence interval [CI] 5.3% to 14.9%, P < .001). At a median follow-up of 49 months, 78 events (ie, recurrence or death) had been observed and 53 patients had died. The unadjusted risks for first event and death were similar between the two arms (hazard ratio [HR] for first event 1.10, 95% CI 0.70 to 1.71, P .68, and HR for death 1.20, 95% CI 0.70 to 2.07, P .50). The 5-year disease-free and overall survival rates in an intention-to-treat analysis were similar between arms (81.0% and 85.9% in the lymphadenectomy arm and 81.7% and 90.0% in the no-lymphadenectomy arm, respectively). Conclusion Although systematic pelvic lymphadenectomy statistically significantly improved surgical staging, it did not improve disease-free or overall survival.
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DOI: 10.1093/jnci/djn397
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<front><div type="abstract">Background Pelvic lymph nodes are the most common site of extrauterine tumor spread in early-stage endometrial cancer, but the clinical impact of lymphadenectomy has not been addressed in randomized studies. We conducted a randomized clinical trial to determine whether the addition of pelvic systematic lymphadenectomy to standard hysterectomy with bilateral salpingo-oophorectomy improves overall and disease-free survival. Methods From October 1, 1996, through March 31, 2006, 514 eligible patients with preoperative International Federation of Gynecology and Obstetrics stage I endometrial carcinoma were randomly assigned to undergo pelvic systematic lymphadenectomy (n 264) or no lymphadenectomy (n 250). Patients clinical data, pathological tumor characteristics, and operative and early postoperative data were recorded at discharge from hospital. Late postoperative complications, adjuvant therapy, and follow-up data were collected 6 months after surgery. Survival was analyzed by use of the log-rank test and a Cox multivariable regression analysis. All statistical tests were two-sided. Results The median number of lymph nodes removed was 30 (interquartile range 2242) in the pelvic systematic lymphadenectomy arm and 0 (interquartile range 00) in the no-lymphadenectomy arm (P < .001). Both early and late postoperative complications occurred statistically significantly more frequently in patients who had received pelvic systematic lymphadenectomy (81 patients in the lymphadenectomy arm and 34 patients in the no-lymphadenectomy arm, P .001). Pelvic systematic lymphadenectomy improved surgical staging as statistically significantly more patients with lymph node metastases were found in the lymphadenectomy arm than in the no-lymphadenectomy arm (13.3% vs 3.2%, difference 10.1%, 95% confidence interval [CI] 5.3% to 14.9%, P < .001). At a median follow-up of 49 months, 78 events (ie, recurrence or death) had been observed and 53 patients had died. The unadjusted risks for first event and death were similar between the two arms (hazard ratio [HR] for first event 1.10, 95% CI 0.70 to 1.71, P .68, and HR for death 1.20, 95% CI 0.70 to 2.07, P .50). The 5-year disease-free and overall survival rates in an intention-to-treat analysis were similar between arms (81.0% and 85.9% in the lymphadenectomy arm and 81.7% and 90.0% in the no-lymphadenectomy arm, respectively). Conclusion Although systematic pelvic lymphadenectomy statistically significantly improved surgical staging, it did not improve disease-free or overall survival.</div>
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