Department of Pathology, Anatomy, and Laboratory Medicine (PALM), West Virginia University School of Medicine, Robert C. Byrd Health Sciences Center, Morgantown, West Virginia, USA.
Department of Anatomy, Jagiellonian University Medical College, Kraków, Poland.
Folia Med Cracov. 2020 Sep 28;60(2):5-13. doi: 10.24425/fmc.2020.135009.
Anatomical variations of the inferior vena cava, including the double inferior vena cava or isolated left inferior vena cava, are uncommon and of great clinical importance. Inferior vena cava variations signify predisposition to deep vein thrombosis and may complicate retroperitoneal surgeries including abdominal aortic surgery. Failure to recognize such variations may predispose a patient to life- threatening complications. This prospective anatomical study assessed 129 cadavers for variations of the inferior vena cava. One of the 129 cadavers (0.78%) possessed a double inferior vena cava and none (0%) possessed an isolated left inferior vena cava. The left-sided inferior vena cava was of a larger diameter than that of the right-sided inferior vena cava - opposite of what would be seen in a Type III duplication. Therefore, this observation expands the three-type classification system to include a Type IV duplication.
下腔静脉的解剖变异，包括双下腔静脉或孤立的左下腔静脉，并不常见，但具有重要的临床意义。下腔静脉的变异预示着深静脉血栓形成的倾向，可能使包括腹主动脉手术在内的腹膜后手术复杂化。未能识别这些变异可能使患者面临危及生命的并发症。这项前瞻性解剖学研究评估了 129 具尸体的下腔静脉变异情况。在 129 具尸体中有 1 具（0.78%）存在双下腔静脉，没有（0%）存在孤立的左下腔静脉。左侧下腔静脉的直径大于右侧下腔静脉 - 与 III 型重复的情况相反。因此，这种观察结果将三型分类系统扩展到包括 IV 型重复。
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