Phaeochromocytoma with Normal Urinary Catecholamines: The Potential Value of Urinary Free Metadrenalines
نویسندگان
چکیده
منابع مشابه
Factors influencing the urinary excretion of free catecholamines in man.
1. The 24 h urinary excretion of noradrenaline and adrenaline is significantly lower in recumbent than ambulant normal subjects. 2. A diurnal variation exists in catecholamine excretion, the lowest values occurring during sleep. 3. Diurnal variation in sodium excretion parallels that in noradrenaline and adrenaline loss but the cycles can be separated by acute alterations in sleep/awake pattern...
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Milne, Kathleen P., Ball, J. N. and Chester Jones, I. Effects of salinity, hypophysectomy and corticotrophin on branchial Naand K-activated ATPase in the eel, Anguilla anguillaL.177 Alexander, D. Pauline, Britton, H. G., Forsling, Mary L., Nixon, D. A. and Ratcliffe, J. G. The concentrations of adrenocorticotrophin, vaso¬ pressin and oxytocin in the foetal and maternal plasma of the sheep in th...
متن کاملDetermination of Total Urinary Catecholamines
SYNOPSIS Two patients with phaeochromocytoma having atypical biochemical features are described. Total catecholamine excretion was normal in one and only slightly raised in the other; both had a diagnostic rise in output of metadrenaline and 4-hydroxy-3-methoxymandelic acid whilst 4-hydroxy-3-methoxyphenylglycol excretion was increased in one of them. During hypertensive attacks adrenaline excr...
متن کاملBiochemical detection of phaeochromocytoma: should we still be measuring urinary HMMA?
AIMS To compare the diagnostic value of biochemical tests in the detection of phaeochromocytoma. METHODS Urinary catecholamines and metabolites were measured by high performance liquid chromatography in the initial 24 hour collections from 31 patients with histologically confirmed phaeochromocytoma. Results were compared with values from 50 patients investigated for the possible presence of a...
متن کاملUrinary and plasma catecholamines and urinary catecholamine metabolites in pheochromocytoma: diagnostic value in 19 cases.
We review our data on the measurement of catecholamines and their metabolites in 19 patients with pheochromocytoma. All the assays were specific high-performance liquid chromatographic procedures with electrochemical detection. The assay of fractionated metanephrines was 100% sensitive. Normal values for both urinary norepinephrine and epinephrine were found in two asymptomatic patients with ph...
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ژورنال
عنوان ژورنال: Annals of Clinical Biochemistry: International Journal of Laboratory Medicine
سال: 2002
ISSN: 0004-5632,1758-1001
DOI: 10.1177/000456320203900603