Clinical Anatomy Lab., Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
King Khalid University Hospital, King Fahad Cardiac Centre, King Saud University, Riyadh, Saudi Arabia.
Folia Morphol (Warsz). 2022;81(1):247-253. doi: 10.5603/FM.a2021.0016. Epub 2021 Feb 26.
The study presented an extremely rare case of real complete bilateral duplication of inferior vena cava (IVC) in a male cadaver which has never been reported before. Both IVC had approximately the same diameter. The right IVC drained into the right atrium; the left IVC continued as hemiazygos vein and drained into the superior vena cava. Three anastomotic venous channels, a cranial preaortic, a middle and a caudal retroaortic, joined both vessels. Multiple variations in the way of drainage of posterior intercostal veins, on both sides, were also present. The present report invalidates an old classification defining the two vessels when joined at the level of the renal veins as complete bilateral duplication of IVC. Although the presence of combination of venous variations is extremely rare, awareness of such variations is essential for clinical and surgical procedures to avoid misdiagnosis and surgical complications.
该研究呈现了一例极其罕见的男性尸体双侧下腔静脉完全重复畸形（IVC），此前从未有过报道。双侧 IVC 直径相近。右侧 IVC 汇入右心房；左侧 IVC 继续作为半奇静脉汇入上腔静脉。三条吻合静脉通道，即颅前主动脉旁、中主动脉旁和尾后主动脉旁，连接了这两条血管。两侧肋间后静脉的引流方式也存在多种变异。本报告否定了一种旧的分类方法，即当两条血管在肾静脉水平汇合时，将其定义为完全双侧 IVC 重复畸形。尽管静脉变异的组合非常罕见，但对于临床和手术程序，了解这些变异对于避免误诊和手术并发症至关重要。
