| DART | developmental and reproductive toxicology |
|---|---|
| DBDG | distobuccal developmental groove |
| DD | dangerous drug; data definition; day of delivery; degenerated disc; degenerative disease; delusional... |
| DDH | developmental dysplasia of the hip; Diploma in Dental Health; dissociated double hypertropia |
| DDST | Denver Developmental Screening Test |
| 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) |
|---|---|
| desmoplastic tumours | <radiology> Carcinoid of small bowel or colon, Hodgkin's lymphoma, scirrhous gastric carcinoma (12 Dec 1998) |
| duodenal tumours | <radiology> 90% benign, in 2nd and 3rd portion: 50% malignant, in 4th portion: most malignant, of malignancies: 80-90% leading to adenocarcinoma Differential diagnosis: benign, tubular adenoma, leiomyoma, lipoma, hamartoma (Peutz-Jeghers), prolapsed antral polyp, Brunner's gland adenoma (really hypertrophy and hyperplasia), malignant, adenocarcinoma (80-90% of malignant lesions), villous adenoma (pre-malignant), carcinoid / isleT-cell tumour (12 Dec 1998) |
| odontogenic tumours | Neoplasms produced from tooth-forming tissues. (12 Dec 1998) |
| ovarian stromal tumours | <radiology> Age 20 - 50 yrs, 20% of all ovarian tumours, fibroma / fibrosarcoma, granulosa-theca cell tumour, with or without oestrogens most likely to be precocious puberty, endometrial hyperplasia/carcinoma, fibrocystic breast disease, Sertoli-Leydig cell tumour, aka: arrhenoblastoma, with or without androgens most likely to be masculinization, may be mixed type (12 Dec 1998) |
| ovarian tumours | <radiology> Before age 45 most likely to be 98% benign, 2/3 of cancers in ages 40 - 65 yrs see also: ovarian stromal tumours (12 Dec 1998) |
| lymphatic vessel tumours | Neoplasms composed of lymphoid tissue, a lattice work of reticular tissue the interspaces of which contain lymphocytes. The concept does not refer to neoplasms located in lymphatic vessels. (12 Dec 1998) |
| acute brain syndrome | <syndrome> A condition of severe confusion or rapid change in brain function. This often occurs as the result of a mental illness or physical illness. Symptoms include lethargy, agitation, confusion, disorientation and delirium. (27 Sep 1997) |
| acute organic brain syndrome | <syndrome> A constellation of behavioural or psychological signs and symptoms including problems with attention, concentration, memory, confusion, anxiety, and depression caused by transient or permanent dysfunction of the brain. Synonym: acute organic brain syndrome, OBS, organic mental syndrome. (05 Mar 2000) |
| anterior part of anterior commissure of brain | The anterior part of the anterior or rostral commissure of the brain. Synonym: pars anterior commissurae rostralis, pars anterior commissurae anterioris cerebri. (05 Mar 2000) |
| arachnoid of brain | That portion of the arachnoid which lies within the cranial cavity and surrounds the brain and the cranial portion of the subarachnoid space. In several sites it is relatively widely-separated from the pia mater, creating the cranial subarachnoid cisterns. Synonym: arachnoid mater cranialis, arachnoid mater encephali, cerebral part of arachnoid. (05 Mar 2000) |
| base of brain | The inferior surface of the brain visible when seen from below. Synonym: facies inferior cerebri, basis cerebri, inferior cerebral surface. (05 Mar 2000) |
| big brain | <molecular biology> Neurogenic gene of Drosophila, believed to encode a product involved in cell cell communication, perhaps via gap junctions. Member of the major intrinsic protein family. (18 Nov 1997) |
| blood-brain barrier | <pharmacology, physiology> A protective barrier formed by the blood vessels and glia of the brain. It prevents some substances in the blood from entering brain tissue. The blood vessels of the brain (and the retina) are much more impermeable to large molecules (like antibodies) than blood vessels elsewhere in the body. This has important implications for the ability of the organism to mount an immune response in these tissues, although the basis for the difference in endothelial permeability is not well understood. (16 Dec 1997) |
| brain | One of the two components of the central nervous system, the brain is the centre of thought and emotion. It is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.). (22 May 1997) |