Observational studyWorld journal of surgical oncology2026
Optimization of artery-first approach in right-sided colon cancer CME: preoperative CTA assessment of MCA branching and MCV-Henle's trunk relationship.
Observational study in World journal of surgical oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundVascular injury, particularly involving Henle's trunk, remains a major challenge during complete mesocolic excision (CME) for right-sided colon cancer. Due to the high anatomical variability of right-sided colonic vessels, the influence of tumor location, and heterogeneity in operative techniques, radical right hemicolectomy (RRC) continues to be a high-risk procedure. This study aims to identify preoperative CTA mapping to reduce vascular injury and enhance mesenteric margin integrity in standardized CME surgery. MATERIAL AND
methodsA single-center, retrospective observational study was performed. 96 patients underwent preoperative MS-CTA to characterize MCA branching types and MCV-Henle's trunk configurations. Based on these findings, individualized artery-first, sheath-based dissection strategies were applied. Operative outcomes were compared with 85 patients who underwent conventional CME, regarding intraoperative bleeding, vascular injury rate, and the subjective assessment of mesenteric margin integrity.
resultsPreoperative MS-CTA successfully identified MCA and MCV-Henle's trunk types in 95.8% of patients, which is concordant with intraoperative findings. The CTA-guided artery-first group showed significantly fewer venous injuries and improved exposure of the Henle's trunk and SMV compared with the conventional group. No MCV injuries occurred in the MS-CTA group; only two cases of minor bleeding from small branches of Henle's trunk were observed and were easily controlled. In addition, the quality of CME specimen integrity showed progressive improvement with increasing surgical experience.
conclusionsManual subtraction CTA allows accurate visualization of fine vascular anatomy and facilitates a safe, artery-first CME strategy for right-sided colon cancer. CTA-guided sheath dissection reduces intraoperative vessel injuries and improves precision of the surgery.
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