Abstract
Chromaffin-reacting pheochromocytomas of the adrenal medulla are the most frequently encountered functional paraganglionic neoplasms. However, extra-adrenal pheochromocytomas as well as non-chromaffin paragangliomas, including those of the carotid body and glomus jugulare, may produce symptoms from catecholamine secretion. One of the extra-adrenal sites from which these tumors arise is from a collection of para-aortic, paraganglion cells around the origin of the inferior mesenteric artery. This collection of paraganglia was described in fetuses by Zuckerkandl in 1901 and has subsequently been referred to as the organ of Zuckerkandl. The diagnosis and management of these neoplasms differ somewhat from that of adrenal pheochromocytomas, but excellent results are often obtained by excision of these lesions. Four patients with functional tumors of the organ of Zuckerkandl are reviewed together with the other reported cases in the literature.
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