Monarch Disease Ontology identifier MONDO_0000550 (extra-adrenal sympathetic paraganglioma) is a benign or malignant sympathetic paraganglioma arising from paraganglia outside the adrenal gland. Clinical symptoms are related to secretion of catecholamines. Representative examples include the superior and inferior paraaortic and bladder paragangliomas. Also known as: extra-adrenal Chromaffinoma, extra-adrenal chromaffin neoplasm, extra-adrenal pheochromocytoma, extra-adrenal sympathetic Paraganglionic neoplasm, extraadrenal pheochromocytoma.