| An extremely rare aldosterone-producing neoplasm composed of aberrant adrenocortical tissue located outside the adrenal glands (for example in retroperitoneum, perirenal or periaortic fatty tissue, thorax, spinal canal, testes, ovaries). Typical characteristics are symptoms related to increased aldosterone levels (such as sustained, treatment-resistant hypertension and hypokalemia) or symptoms caused by local tumor enlargement. |