title: [Preoperative evaluation of multi-slice spiral computed tomography angiography in laparoscopic radical operation for colorectal carcinoma].
abstract: OBJECTIVE
  To investigate the clinical application of 256 multi-slice spiral computed tomography angiography (MSCTA) technique in the preoperative evaluation of mesenteric angiography in order to provide a reference to vessel anatomy and dissociation in laparoscopic radical operation for colorectal carcinoma.
  
  
  METHODS
  Clinical data of 50 patients with colorectal cancer who underwent preoperative MSCTA+FDCT and laparoscopic curative operation at our hospital from October 2013 to March 2015 were collected (MSCTA group). The evaluation item was visualization of mesenteric artery, which was compared with the findings under laparoscopic surgery. Meanwhile, another 50 colorectal cancer patients undergoing laparoscopic radical operation by the same surgeon team without preoperative MSCTA examination were used as control(control group). Clinical data were compared between the two groups.
  
  
  RESULTS
  MSCTA precisely and correctly demonstrated anatomy and variations of the mesenteric artery and relative nutrient vessel in carcinoma. The angiography reconstruction images were consistent with the visual anatomy and variation from laparoscopic findings, whose diagnostic conformity rate of 100%. As compared to control group, operative time was shorter [(195.0±23.2) minutes vs.(218.0±19.6) minutes, t=8.326, P=0.015], and blood loss was less[(168.1±18.8) ml vs. (206.5±14.3) ml, t=-19.369, P=0.002] in MSCTA group. Differences of number of harvested lymph node, postoperative complication morbidity, postoperative hospital stay and hospitalization cost were not significant between two groups(all P>0.05).
  
  
  CONCLUSIONS
  Preoperative MSCTA can demonstrate anatomy and variations of the mesenteric artery precisely and correctly, thus it is beneficial to shorten the operation time and to reduce blood loss.
authors.affiliation: Department of Oncological Surgery, Dongguan People's Hospital, Guangdong Dongguan 523059, China. 471260683@qq.com.
authors.forename: Runshu
authors.initials: R
authors.lastname: Deng
authors.forename: Linyao
authors.initials: L
authors.lastname: Mo
authors.forename: Xihua
authors.initials: X
authors.lastname: He
authors.forename: Jianhua
authors.initials: J
authors.lastname: Chen
authors.forename: Renjun
authors.initials: R
authors.lastname: Cai
authors.forename: Zaiguo
authors.initials: Z
authors.lastname: Wang
authors.forename: Shichuan
authors.initials: S
authors.lastname: Huang
authors.forename: Huanquan
authors.initials: H
authors.lastname: Lu
authors.forename: Zhaolun
authors.initials: Z
authors.lastname: Huang
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Wu
mesh_terms: D000792:Angiography; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007091:Image Processing, Computer-Assisted; D010535:Laparoscopy; D008198:Lymph Nodes; D008638:Mesenteric Arteries / Q000000981:diagnostic imaging; D061646:Operative Time; D036542:Tomography, Spiral Computed