CYP11B2 and adrenal cortex carcinoma: Immunohistochemical staining for CYP11B2 (aldosterone synthase, cytochrome P450 family 11 subfamily B member 2) enables the histopathological classification of adrenocortical findings to aldosterone-producing adenomas (APA), aldosterone-producing nodules (APN), aldosterone-producing micronodules (APM), multiple APNs or APMs, aldosterone-producing diffuse hyperplasia, or aldosterone-producing adrenocortical carcinoma.18