Abstract: Abstract: Objective To analyze the clinical value of preserving left colic artery during laparoscopic
anterior resection for rectal cancer. Methods Fifty-six cases of patients with rectal cancer and who
treated from June 2015 to April 2019 were selected,and the patients were divided into the observation
group (n=28) and the control group (n=28) by the random table method. All patients underwent
laparoscopic resection of rectal cancer. And the observation group underwent the left colonic artery (low
ligation) during the operation,while the control group underwent the no reservation of left colonic artery
(high ligation) during operation.Then, the operation effects of two groups were evaluated. Results The
operation time in the observation group was longer than that inthe control group (P＜0.05), There was
no significant difference in the intraoperative bleeding volume and radical tumor index between the
observation group and the control group (P＞ 0.05); The recovery of intestinal function, anal exhaust
and hospitalization time in the observation group were shorter than those in the control group (P＜0.05);
The complication rate in the observation group was 7.14%,which was lower than that in the control
group of 28.57%(P＜0.05). Conclusion For patients undergoing laparoscopic resection of rectal cancer,
the intraoperative preservation of LCA can reduce postoperative complications such as the anastomotic
leakage and urinary retention, promote intestinal function recovery as soon as possible, and complete
radical resection of tumor.

Key words: Key words: Laparoscopy, Anterior resection of rectal cancer, Left colonic artery, High ligation;
Low ligation