Biz Maria Eduarda Zen, Salame Jéssica Paola, Correia Gustavo Gumz, Moreira Rafael Saviolo
Centro Universitário de Brusque - UNIFEBE, Brusque, SC, Brasil.
Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil.
J Vasc Bras. 2025 May 30;24:e20240110. doi: 10.1590/1677-5449.202401102. eCollection 2025.
Knowledge of the vascular anatomy of the liver and other abdominal organs helps surgeons improve preoperative planning, achieve greater surgical success, prevent complications, and reduce morbidity and mortality.
To report the prevalence of anatomical variation in the proper hepatic artery and portal vein observed through computed tomography.
This retrospective study was based on 500 3-phase abdominal computed tomography scans. Variations in arterial anatomy were classified according to the Michels system (1966), while those in regarding portal vein anatomy were classified according to the Cheng system (1996).
A total of 31.2% of the cases showed variations in arterial vascularization, the most prevalent being type V (8.2%). No participants were identified with type X, and 0.4% could not be classified. A total of 21.8% showed variation in venous vascularization, with type IV being the most prevalent (8%).
Medical knowledge of these variations and their prevalence is fundamental for the correct surgical management of upper abdomen pathologies and lower rates of postoperative complications. Variations not classified by previous trials should be categorized according to their clinical importance, and new studies should clarify national population patterns to reduce mortality rates from surgical procedures that involve these vessels.
了解肝脏及其他腹部器官的血管解剖结构有助于外科医生改进术前规划、提高手术成功率、预防并发症并降低发病率和死亡率。
报告通过计算机断层扫描观察到的肝固有动脉和门静脉解剖变异的发生率。
这项回顾性研究基于500例腹部三期计算机断层扫描。动脉解剖变异根据米歇尔系统(1966年)分类,门静脉解剖变异根据程氏系统(1996年)分类。
共有31.2%的病例显示动脉血管化存在变异,最常见的是V型(8.2%)。未发现X型参与者,0.4%无法分类。共有21.8%显示静脉血管化存在变异,IV型最为常见(8%)。
了解这些变异及其发生率的医学知识对于正确手术处理上腹部病变和降低术后并发症发生率至关重要。先前试验未分类的变异应根据其临床重要性进行分类,新的研究应阐明全国人群模式,以降低涉及这些血管的手术死亡率。