How do you localize pheochromocytoma?
How do you localize pheochromocytoma?
Computed Tomography (CT) Computed tomography is the anatomical imaging modality of choice for the localization of pheochromocytomas and paragangliomas. It is widely available, fast and has a relative lower cost compared with other imaging modalities such as MRI.
What is the screening test for pheochromocytoma?
The tests of choice to establish the diagnosis of pheochromocytoma are urinary normetanephrine and platelet norepinephrine. A combination of 131I-MIBG scintigraphy and diagnostic tests in urine, blood, or platelets does further improve the sensitivity.
Which of the following drugs can induce hypertensive crisis in pheochromocytoma?
Beta blockers are used if significant tachycardia occurs after alpha blockade. Beta blockers are not administered until adequate alpha blockade has been established, however, because unopposed alpha-adrenergic receptor stimulation can precipitate a hypertensive crisis.
What kind of MRI is used for pheochromocytoma?
The most common MR imaging appearance of pheochromocytoma is a mass with low signal intensity at T1-weighted imaging and with high signal intensity at T2-weighted imaging (,,,Fig 10). Pheochromocytomas commonly enhance avidly at T1-weighted imaging after administration of gadolinium-based contrast material (,21,,22).
Is there a blood test for pheochromocytoma?
The most commonly ordered blood test for pheochromocytoma is the plasma free metanephrine test. Though more convenient to obtain than a 24-hour urine collection, plasma free metanephrine testing is plagued by frequent false positive results.
What is Feokromocytom?
Pheochromocytoma is a type of neuroendocrine tumor that grows from cells called chromaffin cells. These cells produce hormones needed for the body and are found in the adrenal glands. The adrenal glands are small organs located in the upper region of the abdomen on top of the kidneys.
