Pathology Following is true about pheochromocytoma except ? A Extra - adrenal tumors show zellballen pattern B Follows rule of 10s C 90% of non familial cases are bilateral D 10 % of pheochromocytomas are extra adrenal 💡 Explanation Following is true about pheochromocytoma except ? ✓ Correct Answer: C. 90% of non familial cases are bilateral