| Sa | the most anterior point of the anterior contour of the sella turcica [point]; saline; Staphylococcus... |
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| Si | the most anterior point on the lower contour of the sella turcica [point]; silicon |
| Sp | the most posterior point on the posterior contour of the sella turcica; species; specific; specimen;... |
| ESS | empty sella syndrome; endostreptosin; erythrocyte-sensitizing substance; euthyroid sick syndrome; ev... |
| PES | Patient Escort Service; photoelectron spectroscopy; physicians' equity services; polyethylene sulfon... |
| ESS | Empty sella syndrome |
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| OT | Olfactory tubercle |
| sella turcica | <anatomy> A transverse depression crossing the midline on the superior surface of the body of the sphenoid bone and containing the pituitary gland. It is named "turkish saddle" from its resemblance to the saddle used by turks. (12 Dec 1998) |
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| sella | 1. A seat for a rider, usually made of leather, padded to span comfortably a horse's back, furnished with stirrups for the rider's feet to rest in, and fastened in place with a girth; also, a seat for the rider on a bicycle or tricycle. 2. A padded part of a harness which is worn on a horse's back, being fastened in place with a girth. It serves various purposes, as to keep the breeching in place, carry guides for the reins, etc. 3. A piece of meat containing a part of the backbone of an animal with the ribs on each side; as, a saddle of mutton, of venison, etc. 4. A block of wood, usually fastened to some spar, and shaped to receive the end of another spar. 5. <machinery> A part, as a flange, which is hollowed out to fit upon a convex surface and serve as a means of attachment or support. 6. <zoology> The clitellus of an earthworm. 7. The threshold of a door, when a separate piece from the floor or landing; so called because it spans and covers the joint between two floors. <medicine> Saddle bar, any thin plicated bivalve shaell of the genera Placuna and Anomia; so called from its shape. Synonym: saddle oyster. Origin: OE. Sadel, AS. Sadol; akin to D. Zadel, G. Sattel, OHG. Satal, satul, Icel. Sothull, Dan. & Sw. Sadel; cf. Russ. Siedlo; all perh. Ultimately from the root of E. Sit. Source: Websters Dictionary (01 Mar 1998) |
| diaphragm of sella | A fold of dura mater extending transversely across the sella turcica and roofing over the hypophyseal fossa; it is perforated in its centre for the passage of the infundibulum. Synonym: diaphragma sellae, diaphragm sellae, tentorium of hypophysis. (05 Mar 2000) |
| empty sella | A sella turcica, often enlarged, that contains no discernible pituitary gland; may be primarily due to an incompetent sellar diaphragm with compression of the pituitary gland by herniating arachnoid or secondarily due to surgery or radiotherapy. (05 Mar 2000) |
| empty sella syndrome | <radiology> Aetiology, idiopathic, most commonly reported in middle-aged obese women (associated with DM, hypertension, normal pituitary function), secondary, pituitary adenoma, surgery or irradiation, communicating hydrocephalus, familial (very rare) X-ray findings: sella normal or increased, intrasellar herniation of subarachnoid space, symptoms: headache, visual disorders, with or without decreased pituitary function, cerebrospinal fluid rhinorrhoea (12 Dec 1998) |
| J-sella deformity | Pear-shaped or J-shaped deformity of sella turcica caused by increased pressure on growing sphenoid bone; noted in the mucopolysaccharide storage diseases. (05 Mar 2000) |
| j-shaped sella | <radiology> Cretinism (hypothyroidism), optic glioma, neurofibromatosis, Hurler syndrome (MPS I), mild arrested hydrocephalus, normal variant (12 Dec 1998) |
| accessory tubercle | A small apophysis at the posterior part of the base of the transverse process of each of the lumbar vertebrae. Synonym: processus accessorius, accessory tubercle. (05 Mar 2000) |
| acoustic tubercle | The slight prominence of the floor of the lateral recess of the fourth ventricle, corresponding to the underlying cochlear and vestibular nuclei. Synonym: acoustic tubercle, trigonum acustici. (05 Mar 2000) |
| adductor tubercle | The prominence above the medial epicondyle of the femur to which the tendon of the adductor magnus attaches. Synonym: tuberculum adductorium. (05 Mar 2000) |
| amygdaloid tubercle | A projection from the roof of the anterior end-portion of the temporal horn of the lateral ventricle, marking the location of the amygdaloid nucleus. (05 Mar 2000) |
| anatomical tubercle | postmortem wart |
| anterior tubercle of atlas | A conical protuberance on the anterior surface of the arch of the atlas. Synonym: tuberculum anterius atlantis. (05 Mar 2000) |
| anterior tubercle of cervical vertebrae | The anterior projection from the transverse process. Synonym: tuberculum anterius vertebrarum cervicalium. (05 Mar 2000) |
| anterior tubercle of thalamus | anterior thalamic tubercle |
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