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Carotid paraganglioma (carotid body tumor): Is the most common of the head and neck paragangliomas. It usually presents as a painless neck mass, but larger tumors may cause cranial nerve palsies, usually of the vagus nerve and hypoglossal nerve .
Tumors of the paraganglionic tissues are known as paragangliomas, though this term tends to imply the nonchromaffin type, and can occur at a number of sites throughout the body. Chromaffin paragangliomas are issued from chromaffin cells, and are known as pheochromocytomas .
The carotid body is a small cluster of peripheral chemoreceptor cells and supporting sustentacular cells situated at the bifurcation of each common carotid artery in its tunica externa. [ 1 ] [ 2 ] The carotid body detects changes in the composition of arterial blood flowing through it, mainly the partial pressure of arterial oxygen , but also ...
M8682/1 Parasympathetic paraganglioma M8683/0 Gangliocytic paraganglioma (C17.0) M8690/1 Glomus jugulare tumor, NOS (C75.5) Jugular/jugulotympanic paranglioma; M8691/1 Aortic body tumor (C75.5) Aortic/aorticopulmonary paraganglioma; M8692/1 Carotid body tumor/paraganglioma (C75.4) M8693/1 Extra-adrenal paraganglioma, NOS Nonchromaffin ...
A glomus tumor (also known as a "solitary glomus tumor" [1]) is a rare neoplasm arising from the glomus body and mainly found under the nail, on the fingertip or in the foot. [2]: 670 They account for less than 2% of all soft tissue tumors. [3] The majority of glomus tumors are benign, but they can also show malignant features. [4]
A zellballen is a small nest of chromaffin cells or chief cells with pale eosinophilic staining. Zellballen are separated into groups by segmenting bands of fibrovascular stroma, and are surrounded by supporting sustentacular cells. [1]
The criteria in 2024 included all patients with paraganglioma and all patients with unilateral pheochromocytoma aged under 60. [46] The most recent data indicates that there are 25 pheochromocytoma susceptibility genes; however, just 12 are recognized as part of a well-known syndrome. [ 9 ]
Ganglioneuroma (occasionally called a "ganglioma") is a rare and benign tumor of the autonomic nerve fibers arising from neural crest sympathogonia (undifferentiated cells of the sympathetic nervous system). [1]