Abstract：
:Pheochromocytoma accounts for about 0.1 per cent of patients with diastolic hyperstension. It mimics many diseases varying from anxiety psychoneurosis to intracranial tumors. Cardinal symptoms include sevre headache (72 to 92 per cent), sweating (60 tp 70 per cent), palpitations (51 to 73 per cent), and hypertension (> 90 per cent) of which 50 per cent is sustained, 50 per cent paroxysmal. Many drugs (phenothiazines, Saralasin, antiemetics, steroids, etc.) have been reported as precipitating factors. Patients who should be screened for pheochromocytoma include: (1) all symptomatic patients with sustained or paroxysmal hyperstension; (2) asymptomatic hypertension; (3) all patients with MEA 2a,b (hyperparathyroidism, medullary carcinoma of the thyroid, neurocutaneous lesions) and their first degree relatives, even if the latter are asymptomatic and normotensive; (4) hypertension plus diabetes mellitis or hypermetabolism; (5) hypertensive episode during induction of anesthesia or radiologic procedure; and (6) hypertensive response during histamine administration, i.e., gastric analysis. Urinary metanephrine is the single best screening test. Plasma catecholamine determination is particularly helpful when collected before and immediately after an attack. Provacative agents (histamine, glucagon, tyramine) are needed rarely. Preoperative localization of the tumor can be done with nephrotomography IVP, computerized axial tomography, ultrasound, 131-I-19-iodocholesterol scan, arteriography, venography.
journal_name
Urologyjournal_title
Urologyauthors
Juan Ddoi
10.1016/0090-4295(81)90002-9subject
Has Abstractpub_date
1981-01-01 00:00:00pages
1-12issue
1eissn
0090-4295issn
1527-9995pii
0090-4295(81)90002-9journal_volume
17pub_type
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