Blood Flow Path Reconstruction in Rectal Cancer

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.

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Key information

Conditions

Rectal Cancer Colorectal Neoplasms Digestive System Diseases Digestive System Neoplasms Gastrointestinal Diseases Gastrointestinal Neoplasms Image Intestinal Diseases Intestinal Neoplasms Neoplasms Neoplasms by Site Rectal Diseases Rectal Neoplasms Surgery

Age range

39 year–81 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Guoqin LIU

Jinan, Shandong, 250013, China

Who can participate

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

No intervention

Other

no intervention

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

Sponsors and collaborators

Lead sponsor

Shandong First Medical University

Other

Collaborators

Jinan Central Hospital

Registry information

Official study title

Blood Flow Path Reconstruction in Rectal Cancer After High IMA Ligation Through Preoperative and Postoperative Comparison by Manual Subtraction CTA

Important dates

Study start: 2020
Primary completion: 2022
Study completion: 2022
First posted: Jan 6, 2023
Registry last updated: Sep 22, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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