Tympanic paragangliomas are neuroendocrine neoplasms located in the middle ear and arising from chromaffin cells of the parasympathetic paraganglia
Phaeochromocytomas are neuro-endocrine catecholamine-secreting tumours that arise from chromaffin cells of the adrenal medulla or sympathetic paraganglia
Tumors of the Adrenal Gland and Extra-Adrenal Paraganglia
Pheochromocytomas are uncommon tumors arising from the adrenal medulla and the sympathetic paraganglia
The normal paraganglia
consists of nests of chief cells (type1) and sustentacular cells (type 2).
Paragangliomas are uncommon neoplasms that can arise in extra-adrenal paraganglia
or in the adrenal medulla, with the latter conventionally classified as pheochromocytomas.
2) Paragangliomas are highly vascular and slow growing tumors (5 mm annually) deriving from the paraganglia
, which are specialized tissue of the extra-adrenal neuroendocrine system.
They can present anywhere along the sympathetic paraganglia
chains from the neck to the pelvis, but they occur most often intra-abdominally in the periaortic region and the organ of Zuckerkandl.
US and European pathologists offer a broad reference to diseases of the endocrine organs--the thyroid, parathyroid, pituitary, adrenal glands and the paraganglia
Cytokine receptors have been identified in the limbic structures of the brain, peripherally in the paraganglia
of the spinal cord, and on lymphocytes.
Laryngeal paragangliomas are rare neoplasms that originate in the neural crest cells of the laryngeal paraganglia
Because of its association with amine/ peptide secretory materials, CGA is expressed in chromaffin cells (adrenal medulla, paraganglia
, among others), enterochromaffin-like cells, and b cells of the pancreas but not in steroid hormone producing cells (adrenal cortex, gonads, for instance).