[Feasibility and short-outcomes of laparoscopic extralevator abdominoperineal excision without changing position for distal rectal cancer].

Objective To evaluate the short-term outcomes of laparoscopic extralevator abdominoperineal excision (ELAPE) without changing position during operation. Methods Totally 51 patients with distal advanced rectal cancer received surgical operation in Peking Union Midical College Hospital from September 2011 to April 2014. There were 29 male and 22 female patients with a mean age of (61±10) years. Twenty-six percent of the patients received preoperative concomitant chemotherapy and radiation. Twenty-seven patients underwent laparoscopic abdominoperineal excision (APE) procedure, while 24 patients underwent ELAPE procedure. In both groups, patients were kept Lithotomy-Trendelenburg position during operation. The fat tissue in ischialrectal fossa was not routinely removed, except the tumor invasion. All the patients′ pelvic peritoneum was closed by continuous suturing, and subcutaneous tissue and skin by interrupted suturing. Retrospectively compare the pathoclinical features, operation time, bleeding, node retrieval, lateral margin and complications by t-text and χ2 test respectively between ELAPE and APE procedures both by laparoscopic approach. Results No significant differences were found in term of age, gender, BMI, distance from anal verge, percentage of neoadjuvant chemoradiation, and TNM staging between these two groups (all P>0.05). The operation time was significantly shorter in ELAPE group ((181±41) minutes vs. (228±58) minutes, t=－3.265, P=0.002). The bleeding volume was less in ELAPEE group (50 (80) ml vs 80（100）ml (M(QR)), Z=－2.259, P=0.024). The lateral margin, urinal retention and perineal wound healing were comparable for these two groups. No pelvic hernia was found during the postoperative follow-up (2 to 34 months) in both groups (all P>0.05). Conclusions Laparoscopic extralevator abdominoperineal excision without changing position is feasible for distal rectal cancer. Some essential steps can be simultaneously accomplished during operation without changing position. Closing the pelvic peritoneum is important for preventing the intestine dropping from abdominal cavity to presacral cavity. Key words: Rectal neoplasms; Laparoscopy; Levator ani