Left-sided inferior vena cava

Left-sided inferior vena cava

Left-sided inferior vena cava Casey Allen, MD,a Ebo Sauerland, MD,b Carl Sievert, PhD,b and Joshua Bardin, MD,b Miami, Fla; and Reno, Nev A left infer...

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Left-sided inferior vena cava Casey Allen, MD,a Ebo Sauerland, MD,b Carl Sievert, PhD,b and Joshua Bardin, MD,b Miami, Fla; and Reno, Nev A left inferior vena cava (IVC) was observed in the cadaver of a 68-yearold Caucasian man during a routine student dissection at the University of Nevada School of Medicine (A). The IVC, measuring 20 mm in diameter, originated posterior to the left common iliac artery at the level of the L5 vertebra and ascended to the left of the aorta. It was joined by the left renal vein at the level of the L3 vertebra and then crossed obliquely anterior to the aorta and inferior to the superior mesenteric artery to assume its normal right-sided position. At this point, the IVC was joined by the confluence of the right renal vein and what appeared to be a remnant of the right infrarenal IVC, which measured 7 mm in diameter. This remnant was formed by a lumbar vein and an unnamed branch ascending from posterior to the aorta and was joined by the right gonadal vein before entering the confluence of the IVC and right renal vein. The left gonadal vein drained into the left renal vein, but the left adrenal vein drained directly into the IVC as it crossed the aorta. No anomalies of the suprarenal IVC, azygous, or cardiac structures were noted. A left IVC is thought to be caused by the regression of the right supracardinal vein with persistence of the left supracardinal vein during embryological development of the venous system. An understanding of this anomaly is critical to the safe performance of a wide variety of vascular procedures. Submitted Oct 9, 2013; accepted Oct 10, 2013. From the Department of Surgery, University of Miami, Miamia; and the Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno.b Author conflict of interest: none. Email: [email protected] The editors and reviewers of this article have no relevant financial relationships to disclose per the Journal policy that requires reviewers to decline review of any manuscript for which they may have a conflict of interest. J Vasc Surg: Venous and Lym Dis 2014;2:206 2213-333X/$36.00 Copyright Ó 2014 by the Society for Vascular Surgery. http://dx.doi.org/10.1016/j.jvsv.2013.10.001

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