Duplicated inferior vena cava and anatomical variation of the left renal vein: A case report

Abstract

The double inferior vena cava is an anatomical variation of the inferior vena cava (IVC). Its development occurs during the embryological period and estimates that this anatomical variation occurs in 0.2 - 3% of the population. This complex process of embryological remodeling involving anastomosis, regression and persistence of venous segments is susceptible to failure, and only in the IVC are reported more than 60 types of malformations are found. Dissection was performed in the mesogastric region in 01 cadaver adult male and of unknown age. During the dissection an anatomical variation of the IVC was found. A dissection of the mesogastric region of the cadaver was performed. After dissection, the blood vessels diameter was measured by means of the Digital CLD 006 (Uyustools, Beijing, China) digital caliper. The IVC was measured at three different points and we established reference points for each measurement: after anastomosis of the common iliac veins, below the inferior mesentery vein and below the superior mesenteric vein. The cadaver with the IVC presented a reduction in the diameter of the left common iliac vein and the diameter of three segments of the IVC. The left gonadal vein developed an anastomosis with the left renal vein. The left duplicate suprarenal vein had an anastomosis with the left renal vein. Duplicate IVC presented an anastomosis with the left renal vein. These anastomosis may become a major problem during emergency arteriovenous renal ischemia, which can lead to complications during urologic surgery