Table 2.

Cross-sectional imaging morphologies and interpretation of adrenal venous sampling (by patient-level data)

Definition of lateralization	AVS interpretation	PA patients with bilateral morphologically normal adrenal glands on imaging (n = 43)	PA patients with a unilateral morphologically normal adrenal gland on imaging (n = 200)		Total patients (n = 243)
			Normal left (n = 91)	Normal right (n = 109)
LI ≥2	Bilateral PA	17	9	14	40
	Left lateralized	12	7	75	94
	Right lateralized	14	75	20	109
LI ≥4	Bilateral PA	28	15	34	77
	Left lateralized	7	6	65	78
	Right lateralized	8	70	10	88

Abbreviations: AVS, adrenal venous sampling; LI, unstimulated lateralization index; PA, primary aldosteronism. Bold values highlight patients with discordant results between cross-sectional imaging findings and AVS lateralization.