Statistics
- About 10% of adrenal cases are bilateral (suggesting hereditary disease)
- About 10% of adrenal cases occur in children (also suggesting hereditary disease)
- About 15% are extra-adrenal (located in any orthosympathetic tissue): of these 9% are in the abdomen and 1% are located elsewhere. Some extra-adrenal pheochromocytomas are probably actually paragangliomas, but the distinction is only possible after surgical resection.
- About 11.1% of adrenal cases are malignant, but this rises to 30% for extra-adrenal cases
- About 26% are hereditary (earlier opinion had 10%)
- About 3% recur after being resected
- About 14% of affected individuals do not have arterial hypertension (Campbell's Urology)
Read more about this topic: Pheochromocytoma
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