![]() These catecholamines cause attacks of hypertension, headache, nausea and vomiting, sweating, pallor and severe apprehension.Ĭhemodectoma is another benign tumor of the chemoreceptor system, the most common types being the carotid body tumor and the glomus jugulare tumor. ![]() The tumor secretes epinephrine and norepinephrine. Pheochromocytoma is a benign tumor derived from the adrenal medulla or sympathetic paraganglia. The catecholamine metabolites vanillylmandelic acid and homovanillic acid can be measured quantitatively in the urine as a test for the disease. Neuroblastoma is the second most common solid tumor in childhood (after brain tumors). There are a number of disorders involving catecholamines, including neuroblastoma, pheochromocytoma, chemodectina, the familial paraganglioma syndrome, dopamine-ß-hydroxalase deficiency, and tetrahydrobiopterin deficiency ![]() ![]() An amine derived from the amino acid tyrosine - examples include epinephrine ( adrenaline), norepinephrine (noradrenaline), and dopamine - that act as hormones or neurotransmitters. ![]()
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