| BLS | bare lymphocyte syndrome; basic life support; blind loop syndrome; blood and lymphatic system; blood... |
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| BSA | benzenesulfonic acid; Biofeedback Society of America; bismuth-sulfite agar; bis-trimethylsilyl-aceta... |
| BVA | Blind Veterans Association; British Veterinary Association |
| CB | Bachelor of Surgery [Lat. Chirurgiae Baccalaureus]; calcium blocker; carbenicillin; carotid body; ch... |
| DB | data base; date of birth; deep breath; dense body; dextran blue; diabetes, diabetic; diagonal band; ... |
| yolk sac tumour | An unusual and aggressive tumour of germ-cell origin that reproduces the extraembryonic structures of the early embryo. It is the most common malignant germ cell tumour found in children. It is characterised by a labyrinthine glandular pattern of flat epithelial cells and rounded papillary processes with a central capillary (schiller-duval body). The tumour is rarely bilateral. Before the use of combination chemotherapy, the tumour was almost invariably fatal. (12 Dec 1998) |
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| featureless thecal sac | <radiology> No nerve roots seen (in lumbar spine; roots not seen in T-spine) Differential diagnosis: arachnoiditis, Pantopaque, infection, haemorrhage, surgery / RT, subdural injection, contrast flows, unlike epidural injection, nerve roots seen as they exit, but not between disc levels (12 Dec 1998) |
| lacrimal sac | The upper portion of the nasolacrimal duct into which empty the two lacrimal canaliculi; empty. Synonym: saccus lacrimalis, dacryocyst, sacculus lacrimalis, tear sac. (05 Mar 2000) |
| fornix of the lacrimal sac | Fornix of the lacrimal sac; the upper, blind end of the lacrimal sac that extends above the openings of the lacrimal canaliculi. Synonym: fornix sacci lacrimalis. (05 Mar 2000) |
| fossa of lacrimal sac | A fossa formed by the lacrimal bone and the frontal process of the maxilla, lodging the lacrimal sac. Synonym: fossa sacci lacrimalis. (05 Mar 2000) |
| lesser cul-de-sac | The initial portion of the pyloric part of the stomach, which may temporarily become partially or completely shut off from the remainder of the stomach during digestion by peristaltic contraction of the prepyloric "sphincter"; it is demarcated, sometimes, from the second part of the pyloric part of the stomach (pyloric canal) by a slight groove. Synonym: antrum pyloricum, antrum, lesser cul-de-sac. (05 Mar 2000) |
| lesser peritoneal sac | <anatomy> An isolated portion of the peritoneal cavity lying dorsal to the stomach and extending craniad to the liver and diaphragm and caudad into the greater omentum; it opens into the general peritoneal cavity at the epiploic foramen. Synonym: bursa omentalis, lesser peritoneal cavity, lesser peritoneal sac, omental sac. (05 Mar 2000) |
| vein of vestibular aqueduct | A small vein accompanying the endolymphatic duct; it drains much of the vestibular portion of the labyrinth and terminates in the inferior petrosal sinus. Synonym: vena aqueductus vestibuli. (05 Mar 2000) |
| vein of vestibular bulb | The vein draining the bulb of the vestibule; a tributary of the internal pudendal vein. Synonym: vena bulbi vestibuli. (05 Mar 2000) |
| vestibular | <anatomy> Pertaining to or toward a vestibule. In dental anatomy, used to refer to the tooth surface directed toward the vestibule of the mouth. Origin: L. Vestibularis (18 Nov 1997) |
| vestibular anus | <anatomy, surgery> A congenital malformation in which the anus is imperforate but the rectum opens into the vagina just above the vulva. (05 Mar 2000) |
| vestibular apparatus | <anatomy> The receptor organ of the vestibular portion of the 8th cranial nerve, consisting of the three saemicircular canals and the otolith, located within the petrous portion of the temporal bone of the skull. (05 Mar 2000) |
| vestibular aqueduct | <anatomy> A small bony canal linking the vestibule of the inner ear to the posterior part of the internal surface of the petrous temporal bone. It surrounds the endolymphatic duct. (12 Dec 1998) |
| vestibular area | More specifically look at: inferior vestibular area, superior vestibular area. (05 Mar 2000) |
| vestibular branches of labyrinthine artery | <anatomy, artery> Branches of labyrinthine artery passing to the vestibule of the bony labyrinth to supply the membranous labyrinth. (05 Mar 2000) |