Also found in: Dictionary, Thesaurus, Encyclopedia.
a benign tumor of adrenal cortical cells; small unencapuslated nodules of adrenal cortex are probably localized areas of hyperplasia rather than adenomas; true adenomas are rare and may be symptomless or associated with Cushing syndrome or primary aldosteronism.
adrenocortical adenomaA usually solitary, well-circumscribed neoplasm with a pseudocapsule, often an orange-/yellow- or brown-cut surface. The adjacent cortex varies from atrophic to normal to hypertrophic. Adrenocortical adenoma may be asymptomatic or cause symptoms related to hormonal hyperfunction.