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a tumor of the tissue composing the paraganglia.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A neoplasm usually derived from the chemoreceptor tissue of a paraganglion, such as the carotid body, or the medulla of the adrenal gland; the latter is usually termed a chromaffinoma or pheochromocytoma.
Farlex Partner Medical Dictionary © Farlex 2012
paragangliomaAn uncommon neuroendocrine tumour often of the head and neck which arises in neural crest and is more common in women; 2 to 9% of carotid body, vagal body and jugulo-tympanic paragangliomas are malignant vs. 25% of those in the larynx. Paragangliomas are part of Carney’s triad (extraadrenal paraganglioma, GIST, pulmonary chondroma), and occur in von Hippel-Lindau syndrome..
Pulsatile mass, tinnitus.
Carotid body (60%), jugulotympanic, glomus vagale.
Neuroendocrine tumours—e.g., carcinoid, haemangiopericytoma, neuroendocrine carcinoma, medullary carcinoma of thyroid, middle ear adenoma, meningioma.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
paragangliomaOncology A head & neck neural crest tumor more common in ♀; 2-9% of PGs in carotid body, vagal body and jugulo-tympanic region are malignant; 25% of laryngeal PGs are malignant. See Zellballen.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
A neoplasm usually derived from the chromoreceptor tissue of a paraganglion, such as the carotid body, or the medulla of the suprarenal gland; the latter is usually termed a chromaffinoma or pheochromocytoma.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
A neoplasm usually derived from the chromoreceptor tissue of a paraganglion or the medulla of the suprarenal gland.
Medical Dictionary for the Dental Professions © Farlex 2012