The impact of obesity on the short-term efficacy of inter sphincteric resection for patients with ultra-low rectal or anal canal cancer

Abstract

Aim: To determine whether obesity has an impact on the short-term efficacy of inter sphincteric resection (ISR) for patients with ultra-low rectal or anal canal cancer. Methods: This retrospective study includes 276 patients with rectal or anal canal cancer who received treatment from the Rectal Surgery Group of the Gastrointestinal Surgery Center of West China Hospital. According to the WHO, the overweight has a BMI greater than 25. We compare the intraoperative related indicators, postoperative recovery indicators and the rate of occurrence of complications between Group A and Group B. Results: The time of operation in Group B is apparently longer than that in Group A (143.41 min VS. 130.91 min P < 0.05), the intraoperative blood loss, the anastomotic patterns and the reconstruction pattern are not statistically different. The rate of perianal infection of Group B is significantly higher than that of Group A (6.5% VS. 1.5% P < 0.05), and the rate of incision infection of Group B is significantly higher than that of Group A (5.6% VS. 0.6% P < 0.05). The rate of occurrence of other complications between two groups is not statistically different. Conclusion: Obesity increases the difficulty of performing ISR for ultra-low rectal or anal canal cancers, extends the time of operation, and increases the incidence rate of perianal infection post-operatively. There is no significant difference between the indications of postoperative recovery, and the incidence rate of complications in obese patients and that in normal weight patients. In terms of the short-term effects, the operations for obese patients are safe and effective. *Correspondence to: LI L, Way-nan Guo-Xue Xiang 37#, Chengdu, Sichuan, 610041, China, Tel: 86-18980601487; E-mail: drlili116@126.com