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Hypertension 

Hypertension
Chapter:
Hypertension
Author(s):

Srikant Nannapaneni

, Lisbeth Y. Garcia Arguello

, and John G. Park

DOI:
10.1093/med/9780190464813.003.0003
Page of

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date: 12 November 2019

Pheochromocytomas are rare catecholamine-secreting tumors that arise from the chromaffin cells in the adrenal medulla and from the sympathetic ganglia (also called paragangliomas) outside the adrenal. The annual incidence is less than 1 per 100,000 persons. Although the classic textbook presentation is the triad of episodic headache, sweating, and tachycardia, the clinical presentation can range from an incidental discovery of an adrenal mass on imaging studies in an asymptomatic patient to hypertensive crises resulting in acute end-organ complications.

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