PMC9807993_01
Preoperative computed tomography scan showing compression of the left renal vein between the aorta and superior mesenteric artery (blue arrow). It is also possible to observe the large dilatation of the left renal vein. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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Preoperative CT showed a compression of the LRV between the aorta and superior mesenteric artery with consequent dilatation of the LRV near to the kidney (Fig. 1).
Left renal vein dissected to inferior vena cava junction after colon reflection. IVC = inferior vena cava; LRV = left renal vein; SMA = superior mesenteric artery.
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After the transperitoneal laparoscopic access, robotic docking and access to the retroperitoneum, the LRV was dissected until its junction with the inferior vena cava (Fig. 2).
A) Stent around the left renal vein with the edges sutured together and fixed to the extravascular surface to prevent migration. B) Longitudinally open ringed polytetrafluoroethylene vascular stent.
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An externally reinforced PTFE graft was introduced through the trocar and placed over the LRV (Fig. 3A), being firmly fixed on the extravascular surface with mersilene stitches in order to prevent migration (Fig. 3B).