| TNF alpha | Anti-tumour necrosis factor alpha |
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| BTB | Blood-Tumour-Barrier |
| BMRTC | Bone metastasising renal tumour of childhood |
| EATC | Ehrlich Ascites tumour cells |
| GCT | Granular Cell Tumour |
| chromaffin tumour | <tumour> A neoplasm composed of chromaffin cells occurring in the medullae of adrenal glands, the organs of Zuckerkandl, or the paraganglia of the thoracolumbar sympathetic chain; some chromaffinoma's secrete catecholamines. See: pheochromocytoma. Synonym: chromaffin tumour. (05 Mar 2000) |
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| paraganglia, chromaffin | Small bodies containing chromaffin cells occurring outside of the adrenal medulla, most commonly near the sympathetic ganglia and in organs such as the kidney, liver, heart and gonads. (12 Dec 1998) |
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| chromaffin | Giving a brownish yellow reaction with chromic salts; denoting certain cells in the medulla of the adrenal glands and in paraganglia. Synonym: chromaphil, chromatophil, chromophil, chromophile, pheochrome. Origin: chrom-+ L. Affinis, affinity (05 Mar 2000) |
| chromaffin body | A small, roundish body containing chromaffin cells; a number of such bodies may be found retroperitoneally near the aorta and in organs such as the kidney, liver, heart, and gonads. Synonym: chromaffin body. (05 Mar 2000) |
| chromaffin cell | Family of related acidic proteins (400-600 residues) found in many endocrine cell secretory vesicles. Secretogranin 1 = chromogranin B, secretogranin 2 = chromogranin C. (18 Nov 1997) |
| chromaffin cells | Cells that store epinephrine secretory vesicles. During times of stress, the nervous system signals the vesicles to secrete their hormonal content. Their name derives from their ability to stain a brownish colour with chromic salts. Characteristically, they are located in the adrenal medulla and paraganglia (paraganglia, chromaffin) of the sympathetic nervous system. (12 Dec 1998) |
| chromaffin granules | Granules in the adrenal glands and various other organs, which are concerned with the synthesis, storage, metabolism, and secretion of epinephrine and norepinephrine. (12 Dec 1998) |
| chromaffin reaction | Production of a yellow-brown to brown colouration in normal and abnormal cells containing epinephrine and norepinephrine, when fresh tissue slices are placed in a dichromate-chromate mixture overnight; useful for detection of pheochromocytoma (adrenal medulla) and other tumours which produce catecholamines. (05 Mar 2000) |
| chromaffin system | The cells of the body which stain with chromium salts. They occur along the sympathetic nerves, in the adrenal gland, and in various other organs. (12 Dec 1998) |
| chromaffin tissue | Tissue in medulla of adrenal gland containing two populations of cells, one producing adrenaline, the other noradrenaline. The catecholamine is associated with carrier proteins (chromogranins) in membrane vesicles (chromaffin granules). (18 Nov 1997) |
| acinar cell tumour | A solid and cystic tumour of the pancreas, occurring in young women; tumour cells contain zymogen granules. (05 Mar 2000) |
| acute splenic tumour | Acute splenitis, enlargement, and softening of the spleen, usually due to bacteraemia or severe bacterial toxaemia. (05 Mar 2000) |
| adenoid tumour | Adenoma, or neoplasm with glandlike spaces. (05 Mar 2000) |
| adenomatoid odontogenic tumour | A benign epithelial odontogenic tumour appearing radiographically as a well-circumscribed radiolucent-radiopaque lesion usually surrounding the crown of an impacted tooth in an adolescent or young adult; characterised histologically by columnar cells organised in a duct-like configuration interspersed with spindle-shaped cells and amyloid-like deposition that gradually undergoes dystrophic calcification. Synonym: adenoameloblastoma, ameloblastic adenomatoid tumour. (05 Mar 2000) |
| adenomatoid tumour | A small, circumscribed, benign tumour of the genital tract, composed of small glandlike spaces lined by flattened or cuboidal mesothelium-like cells. (12 Dec 1998) |
| adipose tumour | <oncology, tumour> Clumps of fat cells. Literally, fat cancer. These are benign tumours that can form in the breast. (16 Dec 1997) |
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