Ex vivo renal artery reconstructions: indications and techniques

Area of Science:

• Vascular Surgery
• Renal Medicine
• Surgical Innovation

Background:

• Ex vivo renal artery surgery expands revascularization options, previously limited to nephrectomy.
• Various surgical techniques exist, adaptable to specific patient anatomy.
• Fibromuscular dysplasia is a common indication for these complex procedures.

Purpose of the Study:

• To report the experience with ex vivo renal artery reconstruction in 27 kidneys.
• To evaluate the outcomes of different surgical techniques for renovascular lesions.
• To compare in-situ repair with autotransplantation for complex cases.

Main Methods:

• Retrospective review of 27 ex vivo renal artery reconstructions.
• Categorization of lesions: stenosis, tumors, arteriovenous malformations, fibromuscular dysplasia.
• Surgical techniques included autotransplantation, renal vein mobilization, and in-situ repair.

Main Results:

• Successful revascularization achieved in 20 out of 22 postoperative angiograms.
• Indications included fibromuscular dysplasia (24), stenosis/tumors (2), and arteriovenous malformation (1).
• Complications included one operative death, one reoperation for bleeding, and two cases of acute tubular necrosis.

Conclusions:

• Ex vivo renal artery reconstruction is a viable alternative to nephrectomy for complex renovascular disease.
• In-situ repair and replacement into the original renal fossa is preferred over autotransplantation.
• Careful technique selection is crucial for successful outcomes in these challenging cases.