| HCS | Hajdu-Cheney syndrome; Hazard Communication Standard; health care support; hourglass contraction of ... |
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| RSS | rat stomach strip; rectosigmoidoscopy; Russell-Silver syndrome |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |
| St, st | let it stand [Lat. stet]; let them stand [Lat. stent]; stage [of disease]; status; stere; sterile; s... |
| stom | stomach |
| primitive pit | The depression in the primitive node that serves to connect the notochordal canal with the surface ectoderm and the yolk sac. These connections are referred to as the neurenteric canal. (05 Mar 2000) |
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| primitive reticular cell | A cell with processes making contact with those of other similar cell's to form a cellular network; along with the network of reticular fibres, the reticular cell's form the stroma of bone marrow and lymphatic tissues. (05 Mar 2000) |
| primitive ridge | One of the paired ridge's on either side of the primitive groove. (05 Mar 2000) |
| primitive streak | An ectodermal ridge in the midline at the caudal end of the embryonic disk from which arises the intraembryonic mesoderm; achieved by inward and then lateral migration of cells; in human embryos, it appears on day 15 and gives a cephalocaudal axis to the developing embryo. Synonym: germinal streak. (05 Mar 2000) |
| neuroectodermal tumour, primitive | A malignant brain tumour sharing common features and biologic properties with medulloblastoma. Some pathologists and clinicians use the terms interchangeably: they both can disseminate throughout the nervous system and, in some cases, systemically. most lesions arise from the posterior fossa in children under five years of age. The tumour often produces hydrocephalus and symptoms of increased intracranial pressure. Papilledema is often present. (12 Dec 1998) |
| anterior wall of stomach | The part of the gastric wall that faces the peritoneal cavity. Synonym: paries anterior gastris. (05 Mar 2000) |
| bare area of stomach | The part of posterior surface of the fundus of the stomach between the two diverging layers of the gastrophrenic ligament, that is not covered by peritoneum. (05 Mar 2000) |
| bed of stomach | The structures against which the posteroinferior surface of the stomach lies, and from which it is separated, for the main part, by the omental bursa; includes diaphragm, left suprarenal gland, upper part of left kidney, splenic artery, anterior aspect of pancreatic body and tail, left colic flexure, and transverse mesocolon. (05 Mar 2000) |
| bilocular stomach | A condition in which there is a central constriction of the wall of the stomach dividing it into two cavities, cardiac and pyloric. Synonym: bilocular stomach, ectasia ventriculi paradoxa. Leather-bottle stomach, marked thickening and rigidity of the stomach wall, with reduced capacity of the lumen although often without obstruction; nearly always due to scirrhous carcinoma, as in linitis plastica. Synonym: sclerotic stomach. (05 Mar 2000) |
| body of stomach | The part of the stomach that lies between the fundus above and the pyloric antrum below; its boundaries are poorly defined. Synonym: corpus gastricum [ventriculi]. (05 Mar 2000) |
| cancer, stomach | Cancer of the major organ that holds food for digestion. Stomach cancer (gastric cancer) can develop in any part of the stomach and spread to other organs. Stomach ulcers do not appear to increase a person's risk of developing stomach cancer. Symptoms of stomach cancer are often vague, such as loss of appetite or weight. The cancer is diagnosed with a biopsy of stomach tissue during a procedure called an endoscopy. (12 Dec 1998) |
| cardiac part of stomach | The area of the stomach close to the oesophageal opening (cardiac orifice or cardia) which contains the cardiac glands. Synonym: pars cardiaca gastris, pars cardiaca ventriculi, cardia, gastric cardia. (05 Mar 2000) |
| Rehfuss stomach tube | A tube with a calibrated syringe, formerly used for aspiration of stomach contents in gastric analysis; replaced by plastic disposable stomach tube's. (05 Mar 2000) |
| Reichel-Polya stomach resection | Retrocolic anastomosis of the full circumference of the open stomach to the jejunum. (05 Mar 2000) |
| pavlov stomach | A Pavlov pouch fashionned surgically from part of the stomach (which is isolated from the rest of the stomach). The pouch opens through a fistula (canal) on to the abdominal wall and permits sampling of the gastric contents. See pavlov pouch. (12 Dec 1998) |