| SCTAT | sex cord tumor with annular tubules |
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| MAC | Mitral annular calcification |
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| MAC | Mitral annular calcium |
| SCTAT | Sex cord tumor with annular tubules |
| annular scleritis | An often protracted inflammation of the anterior portion of the sclera, forming a ring around the corneoscleral limbus. (05 Mar 2000) |
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| anterior scleritis | Inflammation of the sclera adjacent to the cornea. (05 Mar 2000) |
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| brawny scleritis | A gelatinous-appearing swelling surrounding the cornea with a tendency to involve the periphery of the cornea. Synonym: gelatinous scleritis. (05 Mar 2000) |
| malignant scleritis | Progressive inflammation of the anterior sclera and adjacent choroid with associated uveitis. (05 Mar 2000) |
| gelatinous scleritis | A gelatinous-appearing swelling surrounding the cornea with a tendency to involve the periphery of the cornea. Synonym: gelatinous scleritis. (05 Mar 2000) |
| posterior scleritis | Inflammation, often monocular, of the sclera adjacent to the optic nerve, with frequent extension to the retina and choroid. (05 Mar 2000) |
| scleritis | Refers to any inflammation of the sclera including episcleritis, a benign condition affecting only the episclera, which is generally short-lived and easily treated. Classic scleritis, on the other hand, affects deeper tissue and is characterised by higher rates of visual acuity loss and even mortality, particularly in necrotizing form. Its characteristic symptom is severe and general head pain. Scleritis has also been associated with systemic collagen disease. Aetiology is unknown but is thought to involve a local immune response. Treatment is difficult and includes administration of anti-inflammatory and immunosuppressive agents such as corticosteroids. Inflammation of the sclera may also be secondary to inflammation of adjacent tissues, such as the conjunctiva. (12 Dec 1998) |
| necrotizing scleritis | Fibrinoid degeneration and necrosis of the sclera. (05 Mar 2000) |
| nodular scleritis | Firm, immobile, single or multiple areas of localised scleritis. (05 Mar 2000) |
| deep scleritis | Severe inflammation of the sclera, with involvement of the underlying uvea. (05 Mar 2000) |
| annular | <dermatology> Arranged in or forming a ring. (09 Oct 1997) |
| annular band | The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. See: congenital amputation. Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. (05 Mar 2000) |
| annular cartilage | <anatomy> The lower most of the laryngeal cartilages, may be palpated just below the thyroid prominence Adjacent the cricoid cartilage and the first tracheal ring is the cricothyroid membrane, a site used for rapid emergency airway access (cricothyroidotomy). (13 Nov 1997) |
| annular cataract | Congenital cataract in which a central white membrane replaces the nucleus. Synonym: disk-shaped cataract, life-belt cataract, umbilicated cataract. (05 Mar 2000) |
| annular illumination | <microscopy> The result of placing a stop in the first focal plane of the condenser to produce an illuminating cone of light with all the light flux near the surface of the cone. The central part of the cone will be dark. This arrangement is often used for a darkfield effect in low-power work by transmitted light. The condenser must be correctly focused and centreed. By reflected light, darkfield illumination is attained with an annular con-denser fitted around the objective for opaque objects. Annular illumination implies that the object is lighted from all sides. (05 Aug 1998) |
| annular ligament | <anatomy> One of a number of ligament's encircling various parts; the principal annular ligament's are those of the stapes, radius, and trachea. See: annular ligament of the radius, annular ligament of the stapes, annular ligaments of the trachea. Synonym: ligamentum annulare, orbicular ligament. (05 Mar 2000) |
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