title: Laparoscopic abdominoperineal resections for mid or low rectal adenocarcinomas:  a retrospective, comparative study.
abstract: BACKGROUND
  Laparoscopic abdominoperineal resection (APR) has been seldom studied apart from low anterior resections, and deserves to be separately analyzed. This study aims to compare perioperative and oncological outcomes of laparoscopic and conventional APRs performed for the treatment of mid and low rectal adenocarcinomas.
  
  
  METHODS
  Patients operated for primary mid or low rectal adenocarcinoma between 2001 and 2009 in our institution were retrospectively investigated. These data were abstracted and compared within conventional and laparoscopic resection groups: demographics, tumor and procedure-related parameters, perioperative results, early oncological outcomes, and survival.
  
  
  RESULTS
  Demographics and tumor and procedure-related parameters were similar within the laparoscopic (n=31) and conventional (n=36) groups, except intraoperative bleeding and requirement for transfusion, which were significantly lower after laparoscopic APRs. Perioperative results including complication, reoperation, and 30-day mortality rates were identical. Early oncological results and 3-year survival rates were alike.
  
  
  CONCLUSIONS
  The perioperative results and oncological outcomes are similar after laparoscopic and conventional APRs. As current data include limited number of patients in a retrospective design, further studies comparing laparoscopic and conventional APR techniques are required.
authors.affiliation: Department of General Surgery, Kartal Education and Research Hospital, Istanbul, Turkey. cemgezen@hotmail.com
authors.forename: Cem
authors.initials: C
authors.lastname: Gezen
authors.forename: Yunus E
authors.initials: YE
authors.lastname: Altuntas
authors.forename: Metin
authors.initials: M
authors.lastname: Kement
authors.forename: Nuri
authors.initials: N
authors.lastname: Okkabaz
authors.forename: Ahmet
authors.initials: A
authors.lastname: Bilici
authors.forename: Selahattin
authors.initials: S
authors.lastname: Vural
authors.forename: Mahmut
authors.initials: M
authors.lastname: Gumus
authors.forename: Mustafa
authors.initials: M
authors.lastname: Oncel
mesh_terms: D000230:Adenocarcinoma / Q000401:mortality / Q000601:surgery*; D000328:Adult; D000368:Aged; D016063:Blood Loss, Surgical / Q000706:statistics & numerical data; D001803:Blood Transfusion / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D010535:Laparoscopy / Q000379:methods* / Q000401:mortality; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology; D012004:Rectal Neoplasms / Q000401:mortality / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome