To explore the value of CTA in the preoperative examination of laparoscopic assisted colon cancer.

Fifty-eight patients with colon cancer who intended to treat with laparoscopic colon cancer radical resection from May 2013 to July 2016 were divided into two groups according to the different methods of preoperative examination. All patients received preoperative abdominal CT examination and the CTA group patients combined with VR technology could show the major mesenteric major blood vessels. Surgical indicators were comparied including operation time, intraoperative blood loss, lymph node number and postoperative exhaust time. Postoperative complications were including incision infection, anastomosis anastomotic fistula and postoperative intestinal obstruction.

Patients in the CTA group had a shorter duration of operation than the CT group (t=-2.115, P=0.039). The intraoperative blood loss of CTA group was significantly lower than that of CT group (t=-2.349, P=0.031). The number of lymph nodes in the CTA group had no significant difference with that in the CT group (t=1.813, P=0.076). There had no significant difference in the postoperative exhaust time and incidence of postoperative incision infection and postoperative intestinal obstruction between CTA group and CT group (P>0.05) . There was no anastomotic fistula in the CTA group and 3 (13.04%) anastomotic fistulas in the CT group (Χ²=2.522, P>0.05).

CT angiography, mastering of mesenteric vessels of preoperative, not only shortened the operation time, but also reduced the unnecessary vascular injury bleeding, preoperative knowledge of mesenteric blood vessels and lymph node processing range, which was possibly helpful to reduce the occurrence of postoperative complications.