| NEC | National Electrical Code; necrotizing enterocolitis; neuroendocrine cell; neuroendocrine convertase;... |
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| MgC | magnocellular neuroendocrine cell |
| NE | national emergency; necrotic enteritis; necrotizing enterocolitis; nephropathia epidemica; nerve end... |
| NEB | nebulin; neuroendocrine body |
| NET | nasoendotracheal tube; nerve excitability test; neuroectodermal tumor; neuroendocrine tumor; norepin... |
| MMT | Mixed Mullerian Tumours |
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| LCNEC | Large cell neuroendocrine carcinoma |
| MNC | magnocellular neuroendocrine cell |
| NE | Neuroendocrine |
| NET | Neuroendocrine Tumor |
| neuroendocrine tumours | Tumours whose cells possess secretory granules and originate from the neuroectoderm, i.e., the cells of the ectoblast or epiblast that program the neuroendocrine system. Common properties across most neuroendocrine tumours include ectopic hormone production (often via apud cells), the presence of tumour-associated antigens, and isozyme composition. (12 Dec 1998) |
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| carcinoma, neuroendocrine | A group of carcinomas which share a characteristic morphology, often being composed of clusters and trabecular sheets of round "blue cells", granular chromatin, and an attenuated rim of poorly demarcated cytoplasm. Neuroendocrine tumours include carcinoids, small ("oat") cell carcinomas, medullary carcinoma of the thyroid, merkel cell tumour, cutaneous neuroendocrine carcinoma, pancreatic islet cell tumours, and pheochromocytoma. Neurosecretory granules are found within the tumour cells. (12 Dec 1998) |
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| primary neuroendocrine carcinoma of the skin | A rare malignant cutaneous tumour seen in sun-exposed skin of elderly patients composed of dermal nodules of small round cells with scanty cytoplasm in a trabecular pattern; the tumour cells contain cytoplasmic dense core granules resembling neurosecretory granules seen in Merkel cells. Synonym: primary neuroendocrine carcinoma of the skin, trabecular carcinoma. (05 Mar 2000) |
| neuroendocrine | 1. Pertaining to the anatomical and functional relationships between the nervous system and the endocrine apparatus. 2. Descriptive of cells that release a hormone into the circulating blood in response to a neural stimulus. Such cells may comprise a peripheral endocrine gland (e.g., the insulin-secreting beta cells of the islets of Langerhans in the pancreas and the adrenaline-secreting chromaffin cells of the adrenal medulla); others are neurons in the brain (e.g., the neurons of the supraoptic nucleus that release antidiuretic hormone from their axon terminals in the posterior lobe of the hypophysis). (05 Mar 2000) |
| neuroendocrine cell | <endocrinology> A hormone secreted by specialised neurons (neuroendocrine cells), for example releasing hormones. (18 Nov 1997) |
| neuroendocrine transducer cell | An endocrine cell that releases its hormonal product into the bloodstream only upon receipt of a nervous impulse. (05 Mar 2000) |
| benign liver tumours | <radiology> EPITHELIAL TUMORS, nodular transformation, focal nodular hyperplasia, hepatocellular adenoma, MESENCHYMAL TUMORS, lipoma, myelolipoma, angiomyolipoma, leiomyoma, infantile haemangioendothelioma, haemangioma, benign mesothelioma, MIXED TISSUE TUMORS, mesenchymal hamartoma, benign teratoma, MISCELLANEOUS, adrenal rest tumours, pancreatic rest (12 Dec 1998) |
| brain tumours | Can be malignant or benign and can occur at any age. Primary brain tumours initially form in the brain tissue. Secondary brain tumours are cancers that have spread to the brain tissue (metastasized) from tissue elsewhere in the body. (12 Dec 1998) |
| pancreatic isleT-cell tumours | <radiology> Insulinoma (beta-cell), usually solitary, 85% benign, gastrinoma, small, slow-growing, multiple, 60% malignant, Zollinger-Ellison syndrome: mult. Intractable ulcers, VIPoma, vasoactive intestinal peptide (VIP), WDHA syndrome: watery diarrhoea, hypokalaemia, achlorhydria, Verner-Morrison syndrome, glucagonoma, hyperglycaemia, migratory necrolytic erythema APUDomas, associated with MEN-1 (12 Dec 1998) |
| malignant liver tumours | <radiology> EPITHELIAL TUMORS, hepatocellular, hepatoblastoma (7%), hepatocellular carcinoma (HCC) (75%), cholangiocellular (6%), cholangiocarcinomarcinoma, cystadenocarcinoma, MESENCHYMAL TUMORS, tumours of blood vessels, angiosarcoma, haemangioendothelioma, other tumours, embryonal sarcoma, fibrosarcoma, TUMORS OF MUSCLE TISSUE, leiomyosarcoma, rhabdomyosarcoma, MISCELLANEOUS, carcinosarcoma, teratoma, yolk sac tumour, carcinoid, squamous carcinoma, primary lymphoma see: benign liver tumours (12 Dec 1998) |
| venereal tumours, veterinary | Tumours most commonly seen on or near the genitalia. They are venereal, most likely transmitted through transplantation of cells by contact. Metastases have been reported. Spontaneous regression may occur. (12 Dec 1998) |
| giant cell tumours | Tumours of bone tissue or synovial or other soft tissue characterised by the presence of giant cells. The most common are giant cell tumour of tendon sheath and giant cell tumour of bone. (12 Dec 1998) |
| pineal region tumours | Type of brain tumours. (12 Dec 1998) |
| pineal tumours | <radiology> SIGNS: aqueductal obstruction most likely to be hydrocephalus, paralysis of upward gaze (due to pressure on quarigeminal plate), precocious puberty, symptoms of hypothalamic, thalamic, cerebellar or pyramidal lesion TYPES: germ-cell (teratoid) tumours, teratoma, germinoma / atypical teratoma, endodermal sinus (yolk sac) tumour, choriocarcinoma, pineal-cell tumours, pineocytoma, pineo---, others, glioma, ganglioneuroma, ganglioglioma (12 Dec 1998) |
| plant tumours | A localised proliferation of plant tissue forming a swelling or outgrowth, commonly with a characteristic shape and unlike any organ of the normal plant. Plant tumours or galls usually form in response to the action of a pathogen or a pest. (12 Dec 1998) |
| posterior fossa tumours | <radiology> Midline, medulloblastoma (hyperdense, enhances), astrocytoma (hypodense, enhances), 4th ventricle, ependymoma (most common, slow-growing, expands ventricle), medulloblastoma (usually obliterates ventricular cavity), choroid plexus papilloma (more common in lateral ventricles) (12 Dec 1998) |
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