Evaluation of the mesenteric arterial vasculature by computed tomography angiography and its implications for colorectal cancer surgery.

Q3 Medicine Radiologia Brasileira Pub Date : 2024-05-07 eCollection Date: 2024-01-01 DOI:10.1590/0100-3984.2023.0099

Marcelo Castro, Javiera Cornejo, Mauricio Acuña, Laura Naim, José Vía Dorado, Lía Rodríguez, Sebastián Aguirre, David Herquiñigo

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Abstract

Objective: To determine the branching patterns of the inferior mesenteric artery (IMA) and to describe the clinical applicability of computed tomography (CT) angiography in the evaluation of these vessels to facilitate the planning of colorectal cancer surgery.

Materials and methods: We included 100 patients who underwent CT angiography of the abdomen and pelvis. The branching patterns of the IMA were examined and classified as type 1 (bifurcated), including 1A (sigmoid and left colic arteries arising from a common trunk), 1B (sigmoid and superior rectal arteries arising from a common trunk) and 1C (sigmoid arteries arising from both trunks); type 2 (trifurcated); and type 3 (no left colic branch).

Results: Among the 100 patients evaluated, we found the variant to be type 1A in 9%, type 1B in 47%, type 1C in 24%, type 2 in 16%, and type 3 in 4%.

Conclusion: Preoperative CT angiography for evaluating the IMA branching pattern could inform decisions regarding the surgical approach to colorectal cancer.

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通过计算机断层扫描血管造影术评估肠系膜动脉血管及其对结直肠癌手术的影响。

目的确定肠系膜下动脉（IMA）的分支模式，并描述计算机断层扫描（CT）血管造影在评估这些血管方面的临床适用性，以帮助制定结直肠癌手术计划：我们纳入了 100 名接受腹部和盆腔 CT 血管造影术的患者。我们对 IMA 的分支模式进行了检查，并将其分为 1 型（分叉型），包括 1A（乙状结肠动脉和左侧结肠动脉由一个共同主干产生）、1B（乙状结肠动脉和直肠上动脉由一个共同主干产生）和 1C（乙状结肠动脉由两个主干产生）；2 型（三叉型）和 3 型（无左侧结肠分支）：在接受评估的 100 例患者中，我们发现 1A 型占 9%，1B 型占 47%，1C 型占 24%，2 型占 16%，3 型占 4%：结论：术前 CT 血管造影评估 IMA 分支模式可为结直肠癌手术方法的决策提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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