Pheochromocytoma (adrenaline-producing adrenal tumor)
What is the chance that this is cancer?7
About 10% of pheochromocytomas are malignant (cancerous). Benign and malignant pheochromocytomas often look the same. The only reliable way to diagnose a malignant pheochromocytomaPheochromocytoma - a disease where too much adrenaline is being made by an adrenal tumor is if there is tumor invading into nearby structures (kidney, blood vessels, liver), spread to distant sites (bone, lung), or recurrence (i.e. cancer which comes back). Even microscopic examination often cannot determine if it is cancer.