Lateralization was determined according to guidelines of the Endocrine Society. *1 patients with discordant findings between computed tomography and AVS who were treated with an mineralocorticoid receptor antagonist and whose blood pressure was under control. *2 patients whose diagnosis changed to unilateral PA after ACTH stimulation; nevertheless, they underwent adrenalectomy because of severe hypokalemia (n = 2) or resistant hypertension (n = 1). AVS, adrenal vein sampling. Uni-PA, unilateral PA. Bil-PA, bilateral PA. C-Uni-PA, patients whose diagnosis changed to contralateral unilateral PA after ACTH stimulation. RFA, radiofrequency ablation. c-APA, concordant aldosterone-producing adenoma (APA) group (i.e., patients diagnosed with APA by both pre- and post-ACTH). pre-APA, pre-APA group (i.e., patients diagnosed with APA by pre-ACTH only). post-APA, post-APA group (i.e., patients diagnosed with APA by post-ACTH only. non-APA, patients without APA.