Adrenal Vein Sampling in the Young - Necessary or Not?

Area of Science:

• Endocrinology
• Medical Imaging
• Surgical Research

Background:

• Current US Endocrine Society guidelines suggest adrenal venous sampling (AVS) may be unnecessary for primary aldosteronism (PA) patients under 35 with imaging-confirmed unilateral disease.
• This guideline was based on limited evidence, with only one prior study of 6 patients supporting the statement.

Purpose of the Study:

• To evaluate the accuracy of conventional imaging in determining disease laterality in young patients with primary aldosteronism.
• To assess whether current clinical guidelines regarding AVS in younger PA patients are supported by updated evidence.

Main Methods:

• Systematic review and analysis of published studies reporting concordance between conventional imaging and AVS in patients under 35 years with PA.
• Meta-analysis of data from the initial supporting study and four subsequent studies.

Main Results:

• In four additional studies, 7 out of 66 patients (approximately 10.6%) with unilateral disease on imaging were found to have bilateral disease upon AVS.
• These findings indicate a significant discordance rate between imaging and AVS in this demographic.

Conclusions:

• Conventional imaging alone may inaccurately predict disease laterality in a substantial proportion of young patients with PA.
• The current clinical guidelines regarding the necessity of AVS in this patient group may need re-evaluation based on emerging evidence.