The Diagnosis of Pheochromocytoma
- 10 February 1975
- journal article
- research article
- Published by American Medical Association (AMA) in JAMA
- Vol. 231 (6) , 618-619
- https://doi.org/10.1001/jama.1975.03240180054017
Abstract
The diurnal variation of urinary vanillylmandelic acid (VMA) and metanephrine-normetanephrine levels was studied in six patients with pheochromocytoma and 32 patients with essential hypertension. Despite variable degrees of day-night differences, urinary excretion of VMA and metanephrines, per unit of time or per gram of urinary creatinine, was invariably higher in patients with pheochromocytoma than in controls whether the collection was 7 AM through 7 PM or 7 PM through 7 AM. Thus, shorter study periods are sufficient to exclude the presence of a chromaffinoma in most patients with hypertension. (JAMA231:618-619, 1975)Keywords
This publication has 1 reference indexed in Scilit:
- Determination of 3-methoxy-4-hydroxymandelic acid in urineClinica Chimica Acta; International Journal of Clinical Chemistry, 1962