Blood Flow Path Reconstruction in Rectal Cancer

Shandong First Medical University89 enrolled

Overview

A total of 89 patients with distal sigmoid and rectal cancer were referred for observation and underwent MS-CTA between June 2020 and March 2022. The distribution of the left colic artery (LCA) was classified, and the presence of the accessory middle colic artery (AMCA) was assessed. Blood flow paths were planned preoperatively based on the classification of LCA branches. High ligation was performed during standard radical surgery. Intraoperatively, particular care was taken to preserve the bifurcation of the ascending and descending branches of the LCA. The planned blood flow paths were then compared with the actual postoperative blood flow paths to validate the previously proposed mechanism.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Rectal Cancer Surgery Image

Interventions

no interventionOTHER

Eligibility

Sex: ALLMin age: 39 YearsMax age: 81 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Clinical diagnosis of distal sigmoid colon or rectal cancer * cTNM stage confirmed as I-III on MRI or CT * Undergoing laparoscopic anterior resection (LAR) Exclusion Criteria: * Arterial phase scanning initiated too early * Unclear anatomic structure on imaging * No postoperative enhanced CT

Outcomes

Primary Outcomes

Six pattens of blood flow and AMCA based on the preoperative observation

Time frame: 1 hour after the manual subtraction computed tomography angiography (MS-CTA) procedure