Adrenal Vein Sampling: Tips and Tricks

Area of Science:

• Interventional Radiology
• Endocrinology
• Medical Imaging

Background:

• Adrenal vein sampling (AVS) is the gold standard for differentiating unilateral and bilateral primary aldosteronism.
• Historically, AVS was limited to specialized centers due to technical challenges.

Purpose of the Study:

• To highlight recent advancements making AVS more accessible at non-specialized centers.
• To discuss key anatomical landmarks and adjunctive techniques for successful AVS.
• To emphasize the importance of interdisciplinary collaboration for accurate interpretation.

Main Methods:

• Review of anatomical landmarks, including the inferior accessory hepatic and inferior emissary veins.
• Utilization of multidetector CT for detailed adrenal vein anatomy assessment.
• Application of adjunctive techniques: intraprocedural cortisol assay, cone-beam CT, and coaxial systems.

Main Results:

• Anatomical variants can lead to sampling failure; understanding landmarks is key.
• Advanced imaging and techniques simplify right adrenal vein cannulation.
• Interventional radiologists' role is vital for interpreting results, accounting for technical factors.

Conclusions:

• Modern imaging and techniques enhance AVS feasibility and accuracy.
• Careful anatomical assessment and adjunctive tools are critical for successful cannulation.
• Collaboration between interventional radiology, endocrinology, and laboratory medicine optimizes AVS outcomes.