This site is intended for healthcare professionals

account_circleSign in
Go to /sign-in page

You can view 5 more pages without signing in

Ten percent rule

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Phaeochromocytomas may be referred to as the 10% tumour:

  • 10% are extra-adrenal, most commonly, in the organ of Zuckerkandl, located in the aortic bifurcation. Less than 1% are extra-abdominal
  • 10% are bilateral, increasing to 70% in familial cases
  • 10% are malignant, but the risk of malignancy in women is three fold that in men
  • 10% are multiple
  • 10% occur in children, but 25-30% of children have extra-adrenal and/or bilateral tumours

Create an account to add page annotations

Create a free account

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.