Pheochromocytomas

Question 1

What are Pheochromocytomas

Answer 1

They are relatively uncommon neoplasms associated with catecholamine production and hypertension (0.1% - 0.3% of all causes of hypertension)

Question 2

What are the rule of 10% in pheochromocytomas?

Answer 2

1. 10% of pheochromocytomas arise in childhood
2. 10% of pheochromocytomas arise in association with one of several familial syndromes
3. 10% of non familial pheochromocytomas are bilateral
4. 10% of pheochromocytomas are extra-adrenal
5. 10% of pheochromocytomas are biologically malignant.