Most (90%) are benign tumors so they do not spread to other parts of the body. However, these tumors can cause many problems and if they are not treated and can result in death.
The cause of most pheochromocytomas is not known. A small minority (about 10-20%) of pheochromocytomas arise because a person has an inherited susceptibility to them.
Because pheochromocytomas arise from chromaffin cells, they are occasionally called chromaffin tumors.
Pheochromocytomas are rare tumors. They have been reported in babies as young as five days old as well as adults 92 years old. Although they can be found at any time during life, they usually occur in adults between 30 and 40 years of age.
If a pheochromocytoma is suspected, urine and/or a blood test are usually recommended. A test called "24-hour urinary catacholamines and metanephrines" will be done.
Multiple Endocrine Neoplasia, type 2A (MEN2A), Multiple Endocrine Neoplasia, type 2B (MEN2B), von Hippel-Lindau disease (VHL) and Neurofibromatosis type 1 (NF1).
For localized pheochromocytomas the 5-year survival rate is 95%. This rate decreases with aggressive tumors that have metastasized. The prognosis for adrenal cortical cancer is not as good with a 5-year survival rate of 10-35%
seriously serious
more serious, most serious
more serious and most serious
The comparative form is "more serious"; the superlative form is "most serious".
The adverb for serious is seriously.
No, the word 'serious' is an adjective, a word that describes a noun (a serious student, a serious injury).The noun form of the adjective 'serious' is seriousness.