paraganglioma

(redirected from Paragangliomas)

paraganglioma

 [par″ah-gang″gle-o´mah]
a tumor of the tissue composing the paraganglia.

par·a·gan·gli·o·ma

(par'ă-gang'glē-ō'mă),
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.

paraganglioma

/para·gan·gli·o·ma/ (-gang″gle-o´mah) a tumor of the tissue composing the paraganglia.
nonchromaffin paraganglioma  chemodectoma.

paraganglioma

[-gang′glē·ō′mə]
a tumor derived from the chromoreceptor tissue of a paraganglion.

paraganglioma

An 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..
 
Clinical findings
Pulsatile mass, tinnitus.

Sites
Carotid body (60%), jugulotympanic, glomus vagale.

DiffDx
Neuroendocrine tumours—e.g., carcinoid, haemangiopericytoma, neuroendocrine carcinoma, medullary carcinoma of thyroid, middle ear adenoma, meningioma.

paraganglioma

Oncology 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.

par·a·gan·gli·o·ma

(par'ă-gang-glē-ō'mă)
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.

par·a·gan·gli·o·ma

(par'ă-gang-glē-ō'mă)
A neoplasm usually derived from the chromoreceptor tissue of a paraganglion or the medulla of the suprarenal gland.

paraganglioma

a tumor of the tissue composing the paraganglia.
References in periodicals archive ?
The most common primary tumors are paragangliomas (glomus tumors), followed by middle ear adenomas in adults and by hemangiomas in children.
Paragangliomas (PGs) are uncommon neuroendocrine tumors that develop in the extra-adrenal paraganglion neurocrest tissue.
A fine red cytoplasmic granulation is often seen in paragangliomas while intratrabecular hyaline and cytoplasmic yellow bodies are characteristic of HTT.
The differential diagnosis of neck masses with these findings includes paragangliomas, schwannomas, lymphadenopathy, branchial cysts, lymphangiomas, rhabdomyosarcomas, arteriovenous malformation, or myositis ossificans (7).
Therefore, although a genetic mutation in one of the known genes predisposing to pheochromocytomas and paragangliomas was not present, the upstream signaling elicited by IGF-1R can produce a similar cascade in patients with BWS.
Much rarer primary tumors are schwannomas of other cranial nerves: of the trigeminal nerve, of the facial nerve, or of the caudal cranial nerves; paragangliomas, chordomas, chordosarcomas, arachnoid or neurenteric cysts, dermoid tumors, and metastases5.
To the Editor: Extra-adrenal paragangliomas are tumors that arise from neural crest-derived endocrine cells.
4] Extremely hypervascular tumors such as paragangliomas sometimes contain hemorrhagic necrosis and manifest with fluid-fluid levels.
Paragangliomas are extra-adrenal chromaffin tumors that can be either sympathetic or parasympathetic.
Los feocromocitomas y paragangliomas son tumores derivados de las celulas cromafines y, segun la Organizacion Mundial de la Salud, se clasifican como neoplasias neuroendocrinas de la medula suprarrenal y extra-adrenales, respectivamente (1,2).