Abstract
Pheochromocytoma as a cause of both paroxysmal and sustained hypertension is being reported with increasing frequency. Smithwick (1) found 5 such medullary tumors in 1,000 cases of hypertension explored during sympathectomy, but the actual incidence of pheochromocytoma has not been established. The typical syndrome associated with this tumor is well known. The attacks have been variously described but correspond to any or all the effects of epinephrine administration. Sustained hypertension similar to that produced by various etiologic agents, known or unknown, is no longer a rarity. To be considered in reaching a differential diagnosis are hysteria, psychoneurosis, menopausal syndrome, the diencephalic syndrome (2), diabetes mellitus, hyperthyroidism, essential hypertension, tabes dorsalis (3), and other hypertensive states. Since the tumor and the resultant signs and symptoms are amenable to surgery, many investigators have presented tests and procedures to establish the diagnosis. The clinical tests in...
Published Version
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