<prompt> 10 Tumour isPheochromocytomaPapillary Thyroid CarcinomaFollicular Thyroid CarcinomaBrowns Tumor  <response>: Pheochromocytomas normally obey the rule of 10. Hence, they are also called the 10 tumor. i.e. 10 of pheochromocytomas are: Familial. Malignant. Bilateral. Extra-adrenal. Seen in children 