Imaging Modalities for Pheochromocytoma and Paraganglioma

Pheochromocytomas and extra-adrenal paragangliomas, associated with the sympathetic nervous system, are rare neuroendocrine tumors of neural crest origin. These tumors behave differently from those associated with the parasympathetic system (i.e., head and neck paragangliomas). This chapter will particularly emphasize current and emerging knowledge of imaging options in these tumors.