Pathology Which of the following is the most characteristic ultrastructural feature of paraganglioma on electron microscopy? A Shrunken mitochondria B Large Golgi apparatus C Frequent mitoses D Dense core neuroendocrine granules 💡 Explanation Which of the following is the most characteristic ultrastructural feature of paraganglioma on electron microscopy? ✓ Correct Answer: D. Dense core neuroendocrine granules