Significance of computed tomography combined with postural stimulation test in predicting laterality of primary aldosteronism

Table 4 Prevalence of unilateral PA on AVS by categorizing the combination of CT findings and PST

Outcomes		Unilateral PA (n = 314)	Bilateral PA (n = 217)	Prevalence of Unilateral PA on AVS,%(n/N)
CT^a	PST^b	Unilateral PA (n = 314)	Bilateral PA (n = 217)	Prevalence of Unilateral PA on AVS,%(n/N)
+	–	108	23	82.4(108/131)
+	+	91	61	59.9(91/152)
–	–	37	36	50.7(37/73)
–	+	78	97	44.6(78/175)
Total		314	217	59.1(314/531)

^a“+”:unilateral lesion (including adenoma, nodule or hyperplasia) on adrenal CT, “-”:bilateral noraml or lesion on CT
^b“+”:negative in PST, “-”:negative in PST (defined by increase in aldosterone of ≥30%)

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