<prompt> In pheochromocytoma, not a part the rule of 10 is?10 are bilateral10 are malignant10 are extra-adrenal10 are symptomatic  <response>: Ans is d i.e. 10 are symptomatic o Pheochromocytomas usually subscribe to a convenient rule of 10 or 10 tumor; i.e. 10 of pheochromocytomas are :-1 Bilateral2 Extra-adrenal3 Familial4 Malignant5 Multiple6 Occur in children 