Neoplastic Process
paraganglioma
[ payr-uh-gang-glee-oh-muh ]
Subclass of:
Neuroendocrine Tumors
Etymology:
Greek para = beside + ganglion = a mass of nerve cells + -oma = tumor or new growth
Limited by usage to a neoplasm of the medullary portion of the adrenal.
Limited by usage to a neoplasm of the medullary portion of the adrenal.
Definitions related to paraganglioma:
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A benign or malignant neoplasm arising from paraganglia located along the sympathetic or parasympathetic nerves. Infrequently, it may arise outside the usual distribution of the sympathetic and parasympathetic paraganglia. Tumors arising from the adrenal gland medulla are called pheochromocytomas. Morphologically, paragangliomas usually display a nesting (Zellballen) growth pattern. There are no reliable morphologic criteria to distinguish between benign and malignant paragangliomas. The only definitive indicator of malignancy is the presence of regional or distant metastases.NCI ThesaurusU.S. National Cancer Institute, 2021
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A carotid body tumor (also called paraganglionoma or chemodectoma) is a tumor found in the upper neck at the branching of the carotid artery. They arise from the chemoreceptor organ (paraganglion) located in the adventitia of the carotid artery bifurcation.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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A neural crest tumor usually derived from the chromoreceptor tissue of a paraganglion, such as the carotid body, or medulla of the adrenal gland (usually called a chromaffinoma or pheochromocytoma). It is more common in women than in men. (Stedman, 25th ed; from Segen, Dictionary of Modern Medicine, 1992)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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A rare, usually benign tumor that develops from cells of the paraganglia. Paraganglia are a collection of cells that came from embryonic nervous tissue, and are found near the adrenal glands and some blood vessels and nerves. Paragangliomas that develop in the adrenal gland are called pheochromocytomas. Those that develop outside of the adrenal glands near blood vessels or nerves are called glomus tumors or chemodectomas.NCI Dictionary of Cancer TermsU.S. National Cancer Institute, 2021
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A paraganglioma is an abnormal growth of cells that forms from a specific type of nerve cell that's found throughout the body. These specific nerve cells (chromaffin cells) perform important functions in the body, including regulating blood pressure.Mayo Foundation for Medical Education and Research
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