Successful Kidney Transplantation from a Living Donor with Double Inferior Vena Cava and Three Renal Veins: Case Report and Literature Review
This case report and literature review demonstrate that successful living donor kidney transplantation is achievable in patients with the rare combination of a double inferior vena cava and three renal veins through meticulous preoperative imaging and tailored surgical techniques, yielding outcomes comparable to those with normal anatomy.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
When a person's kidneys fail, the body can no longer filter waste from the blood, a condition that requires either lifelong dialysis or a new kidney to survive. While waiting for a kidney from a deceased donor can take years, a living relative can often step in to provide a healthy organ. This process, known as living donor kidney transplantation, usually offers the best chance for a long, healthy life for the recipient. However, the human body is not always built to a standard blueprint. Sometimes, the network of blood vessels that carries blood away from the kidneys is arranged differently than expected. These variations, such as having two main veins where one is usually found, or having three separate veins draining a single kidney instead of one, can make the delicate surgery of removing and reattaching a kidney much more difficult. Surgeons must navigate these unexpected maps with extreme care, as a mistake could damage the organ or the donor.
A team of surgeons in China recently documented a successful operation where they overcame a particularly rare combination of these vascular quirks. They performed a kidney transplant from a 49-year-old father to his daughter, who was suffering from end-stage renal disease. Before the surgery, standard imaging scans suggested the father had a prominent vein that looked like a normal variation, but the true complexity of his anatomy only became clear once the surgeons began the procedure. They discovered that the father possessed a double inferior vena cava, meaning he had two large veins running up his back instead of one, and his left kidney drained into the left side of this system through three separate, short veins. This specific combination of a double vein system and three kidney drainage tubes is exceptionally uncommon, appearing in fewer than one in a thousand people, and had rarely been reported in the context of living donation.
The surgical team approached the operation with a plan to preserve every part of the donor's unique anatomy. Using a minimally invasive technique that involved small incisions in the back, they carefully separated the kidney from the surrounding tissue. They took great care to leave the extra vein intact, as damaging it could cause serious complications for the donor. Once the kidney was removed, the surgeons examined it on a back table and confirmed that the three veins were too short and too far apart to be stitched together into a single opening. Instead of trying to force them into a shape they did not fit, the surgeons decided to connect each of the three veins individually to the large vein in the recipient's pelvis. This required precise stitching of three separate connections rather than the usual single one. The entire time the kidney was outside the body, kept cool and without blood flow, lasted only 20 minutes, a critical factor in ensuring the organ remained healthy.
The results of this complex procedure were immediate and positive. As soon as the blood flow was restored to the new kidney, it began to produce urine, signaling that it was working correctly. The father recovered without complications and was discharged from the hospital ten days after the surgery, with his kidney function remaining normal. The daughter also recovered smoothly; her kidney function improved rapidly, and she was able to leave the hospital two weeks later. At a three-month follow-up, her kidney function was excellent, matching the levels of a healthy person. This case demonstrates that even when a donor has a highly unusual arrangement of blood vessels, the surgery can still be performed successfully. The key lies in using detailed imaging before the operation to understand the anatomy and having the surgical skill to adapt the technique to the specific shape of the vessels.
This successful operation adds to a growing body of medical knowledge suggesting that these rare anatomical variations should not automatically disqualify a healthy person from being a living donor. By reviewing other cases and combining them with their own experience, the authors found that with careful planning and tailored surgical methods, the outcomes for both the donor and the recipient are comparable to those with standard anatomy. The study highlights that the presence of a double vein system or multiple drainage tubes is not a barrier to transplantation, but rather a challenge that can be met with modern surgical techniques. For patients waiting for a kidney, this means that the pool of potential donors is larger than previously thought, offering hope to more families who might otherwise have been told that a living donation was not possible.
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