title: Does the extent of lymphadenectomy in radical cystectomy for bladder cancer influence disease-free survival? A prospective single-center study.
abstract: BACKGROUND
  Controversy exists regarding the optimal extent of lymphadenectomy and the number of lymph nodes to be retrieved at radical cystectomy (RC).
  
  
  OBJECTIVE
  To compare the disease-free survival of patients with standard lymphadenectomy (endopelvic region composed of the internal, external iliac, and obturator groups of lymph nodes) versus extended lymphadenectomy (up to the level of origin of the inferior mesenteric artery) at RC in a prospective cohort of patients at a single, high-volume center.
  
  
  METHODS
  Prospective data were collected from 400 consecutive patients treated with RC for bladder cancer by two high-volume surgeons at Mansoura Urology and Nephrology Center. Of the 400 patients, 200 (50%) received extended lymphadenectomy and the other 200 (50%) underwent standard lymphadenectomy at RC. The patients did not receive any neoadjuvant or adjuvant therapy.
  
  
  METHODS
  Patient characteristics and outcomes are evaluated.
  
  
  CONCLUSIONS
  Median patient age for the entire group was 53.0 yr. Ninety-six patients (24.0%) had lymph node metastases. Median follow-up was 50.2 mo. Estimates of 5-yr disease-free survival in the extended lymphadenectomy group were 66.6% compared with 54.7% for patients with standard lymphadenectomy (p = 0.043). Extended lymphadenectomy was associated with better disease-free survival after adjusting for the effects of standard pathologic features (p = 0.02). When restricting the analyses to lymph node-positive patients, patients with extended lymphadenectomy had much better 5-yr disease-free survival compared with patients with standard lymphadenectomy (48.0% vs 28.2%; p = 0.029). The study was nonrandomized.
  
  
  CONCLUSIONS
  Extended lymphadenectomy is associated with better disease-free survival for bladder cancer patients with endopelvic lymph node involvement and should be considered in these patients.
authors.affiliation: Department of Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt.
authors.forename: Hassan
authors.initials: H
authors.lastname: Abol-Enein
authors.forename: Derya
authors.initials: D
authors.lastname: Tilki
authors.forename: Ahmed
authors.initials: A
authors.lastname: Mosbah
authors.forename: Mahmoud
authors.initials: M
authors.lastname: El-Baz
authors.forename: Ahmed
authors.initials: A
authors.lastname: Shokeir
authors.forename: Adel
authors.initials: A
authors.lastname: Nabeeh
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: Ghoneim
mesh_terms: D000328:Adult; D000368:Aged; D016009:Chi-Square Distribution; D015653:Cystectomy / Q000009:adverse effects / Q000401:mortality; D018572:Disease-Free Survival; D004534:Egypt; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008197:Lymph Node Excision / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D011446:Prospective Studies; D012044:Regression Analysis; D018570:Risk Assessment; D012307:Risk Factors; D015996:Survival Rate; D013997:Time Factors; D016896:Treatment Outcome; D001749:Urinary Bladder Neoplasms / Q000401:mortality / Q000556:secondary / Q000601:surgery*