| acinar | Pertaining to the acinus. Synonym: acinic. (05 Mar 2000) |
|---|---|
| acinar carcinoma | <tumour> An adenocarcinoma arising from secreting cells of a racemose gland, particularly the salivary glands. Synonym: acinar carcinoma, acinic cell carcinoma, acinose carcinoma, acinous carcinoma. (05 Mar 2000) |
| acinar cell | Any secreting cell lining an acinus, especially applied to the cell's of the pancreas that furnish pancreatic juice and enzymes to distinguish them from the cell's of ducts and the islets of Langerhans. Synonym: acinous cell. (05 Mar 2000) |
| acinar cell tumour | A solid and cystic tumour of the pancreas, occurring in young women; tumour cells contain zymogen granules. (05 Mar 2000) |
| carcinoma, acinar cell | A malignant tumour arising from secreting cells of a racemose gland, particularly the salivary glands. Racemose (latin racemosus, full of clusters) refers, as does acinar (latin acinus, grape), to small saclike dilatations in various glands. Acinar cell carcinomas are usually well differentiated and account for about 13% of the cancers arising in the parotid gland. Lymph node metastasis occurs in about 16% of cases. Local recurrences and distant metastases many years after treatment are common. This tumour appears in all age groups and is most common in women. (12 Dec 1998) |
| pancreatic acinar cell | <pathology> Cells of the pancreas that secrete digestive enzymes, the archetypal secretory cell upon which much of the early work on the sequence of events in the secretory process was done. (18 Nov 1997) |
| centri-acinar emphysema | Emphysema affecting the lobules around their central bronchioles, causally related to bronchiolitis, and seen in coal-miner's pneumoconiosis. Synonym: centri-acinar emphysema. (05 Mar 2000) |
| acinic cell adenocarcinoma | <tumour> An adenocarcinoma arising from secreting cells of a racemose gland, particularly the salivary glands. Synonym: acinar carcinoma, acinic cell carcinoma, acinose carcinoma, acinous carcinoma. (05 Mar 2000) |
| adenocarcinoma | <oncology, tumour> A form of cancer that involves cells from the lining of the walls of many different organs of the body. Breast cancer is a type of adenocarcinoma. (14 May 1997) |
| adenocarcinoma, bronchiolo-alveolar | A carcinoma thought to be derived from epithelium of terminal bronchioles, in which the neoplastic tissue extends along the alveolar walls and grows in small masses within the alveoli. Involvement may be uniformly diffuse and massive, or nodular, or lobular. The neoplastic cells are cuboidal or columnar and form papillary structures. Mucin may be demonstrated in some of the cells and in the material in the alveoli, which also includes denuded cells. Metastases in regional lymph nodes, and in even more distant sites, are known to occur, but are infrequent. (12 Dec 1998) |
| adenocarcinoma, clear cell | An adenocarcinoma characterised by the presence of varying combinations of clear and hobnail-shaped tumour cells. There are three predominant patterns described as tubulocystic, solid, and papillary. These tumours, usually located in the female reproductive organs, have been seen more frequently in young women since 1970 as a result of the association with intrauterine exposure to diethylstilbestrol. (12 Dec 1998) |
| adenocarcinoma, follicular | An adenocarcinoma of the thyroid gland, in which the cells are arranged in the form of follicles. (12 Dec 1998) |
| adenocarcinoma in Barrett's oesophagus | An adenocarcinoma arising in the lower third of the oesophagus that has become columnar cell lined (Barrett's mucosa) due to gastroesophageal reflux. (05 Mar 2000) |
| adenocarcinoma in situ | A noninvasive abnormal proliferation of glands believed to precede the appearance of invasive adenocarcinoma; reported in the endometrium, large intestine, cervix, and other sites. (05 Mar 2000) |
| adenocarcinoma, mucinous | An adenocarcinoma producing mucin in significant amounts. (12 Dec 1998) |