Renovascular anatomic variants at CT angiography
1Department of Internal and Experimental Medicine, Magrassi‑Lanzara, Institute of Radiology, Second University of Naples, Naples, Italy - alfonso.reginelli@unina2.it.
Summary
Renal vascular pedicle variations are common, with most renal arteries originating from L1-L2. Awareness of these anatomical differences is crucial for successful renal surgery and interventions.
Area of Science:
- Radiology
- Anatomy
- Vascular Surgery
Background:
- Renal vascular anatomy is critical for surgical and interventional procedures.
- Variations in renal artery and vein origin and course are not well-documented.
Purpose of the Study:
- To assess the origin and course variations of vessels forming the renal vascular pedicle.
- To investigate the prevalence of renal artery and vein anomalies.
Main Methods:
- Retrospective evaluation of 921 patients undergoing multidetector computed tomography (MDCT).
- Analysis of multiplanar and volumetric reformations to identify renal artery origins, venous drainage, and vessel variations.
- Investigation included division variations and extrarenal vessels.
Main Results:
- 96% of main renal arteries originated from L1-L2.
- 31% of patients had multiple renal arteries, with 11% having bilateral multiple arteries.
- 23.8% of patients exhibited a retro-aortic course for the renal vein.
Conclusions:
- Renal artery and vein variations are frequent and can impact surgical outcomes.
- Understanding renovascular anomalies is essential for diagnosing renal artery stenosis and planning renal surgeries.
- Knowledge of these variations is vital for interventional radiology, urology, vascular operations, and renal transplantation.
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