| OPSA | ovarian papillary serous adenocarcinoma |
|---|---|
| ACC | accommodation; acetyl coenzyme A carboxylase; acinic cell carcinoma; acute care center; adenoid cyst... |
| ACE | acetonitrile; acetylcholine esterase; acute cerebral encephalopathy; acute coronary event; adrenocor... |
| ACH | acetylcholine; achalasia; active chronic hepatitis; adrenocortical hormone; amyotrophic cerebellar h... |
| ACI | acceleration index; acoustic comfort index; acute cardiac ischemia; acute coronary infarction; acute... |
| 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) |
| adenocarcinoma, papillary | An adenocarcinoma containing finger-like processes of vascular connective tissue covered by neoplastic epithelium, projecting into cysts or the cavity of glands or follicles. It occurs most frequently in the ovary and thyroid gland. (12 Dec 1998) |
| adenocarcinoma, scirrhous | An adenocarcinoma with a hard (greek skirrhos, hard) structure owing to the formation of dense connective tissue in the stroma. (12 Dec 1998) |
| adenocarcinoma, sebaceous | A malignant tumour composed of cells showing differentiation toward sebaceous epithelium. The tumour is solitary, firm, somewhat raised, more or less translucent, and covered with normal or slightly verrucose epidermis. It may be yellow or orange. The face and scalp are the commonest sites. The growth can be slow or rapid but metastasis is uncommon. Surgery cures most of the cases. (12 Dec 1998) |
| alveolar adenocarcinoma | <tumour> Adenocarcinoma of the lung in which tumour cells form structures resembling alveoli. (05 Mar 2000) |
| bronchiolar adenocarcinoma | <tumour> 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; microscopically, 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 even in more distant sites, are known to occur, but are infrequent. Synonym: alveolar cell carcinoma, bronchiolar adenocarcinoma, bronchiolo-alveolar carcinoma, bronchioloalveolar adenocarcinoma. (05 Mar 2000) |
| bronchioloalveolar adenocarcinoma | <tumour> 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; microscopically, 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 even in more distant sites, are known to occur, but are infrequent. Synonym: alveolar cell carcinoma, bronchiolar adenocarcinoma, bronchiolo-alveolar carcinoma, bronchioloalveolar adenocarcinoma. (05 Mar 2000) |
| pancreatic adenocarcinoma | <radiology> Males (60%), blacks more than whites, risk factors: tobacco, familial pancreatitis, not EtOH!, focal mass in 95%, pancreatic head in 66%, small (low-density, hypoechoic) mass, infiltrates locally, obstructs ducts and encases vessels, metastasis to liver, local nodes See also: pancreatic neoplasms (12 Dec 1998) |
| papillary adenocarcinoma | <tumour> An adenocarcinoma containing finger-like processes of vascular connective tissue covered by neoplastic epithelium, projecting into cysts or the cavity of glands or follicles; occurs most frequently in the ovary and thyroid gland. (05 Mar 2000) |
| renal adenocarcinoma | <radiology> Hypernephroma, renal cell carcinoma, arises from proximal collecting tubule, 10% bilateral adenocarcinoma types: papillary, alveolar, onchocytoma vascularity, 85% hypervascular (require pre-op embolization), 10% hypovascular (usually papillary type), 5% avascular associated with: tuberous sclerosis, von Hippel-Lindau syndrome see also: staging (12 Dec 1998) |
| renal adenocarcinoma: staging | <radiology> Typical presentation: Haematuria . . . . . 70% Fever . . . . . . . 16% Pain . . . . . . . . 50% Polycythemia . . . . 3% Palpable mass . . . 20% Anatomic staging (TNM): T1 Small tumour, kidney not enlarged T2 Large tumour, contained within renal capsule T3 Extension into perinephric fat or renal vein T4 Invasion of adjacent organs (12 Dec 1998) |
| renal adenocarcinoma: vascularity | <radiology> 85% hypervascular (require pre-op embolization), 10% hypovascular (usually the papillary type), 5% avascular also: 10% are bilateral (12 Dec 1998) |
| mesonephric adenocarcinoma | A rare tumour of the female genital tract, most often the ovary, formerly considered to be derived from mesonephric rests. Two varieties are recognised: (1) clear cell carcinoma, so called because of its histologic resemblance to renal cell carcinoma, and now considered to be of muellerian duct derivation and (2) an embryonal tumour (called also endodermal sinus tumour and yolk sac tumour), occurring chiefly in children. The latter variety may also arise in the testis. (12 Dec 1998) |