| thymus hyperplasia | Enlargement of the thymus. A condition described in the late 1940's and 1950's as pathological thymic hypertrophy was status thymolymphaticus and was treated with radiotherapy. Unnecessary removal of the thymus was also practiced. It later became apparent that the thymus undergoes normal physiological hypertrophy, reaching a maximum at puberty and involuting thereafter. The concept of status thymolymphaticus has been abandoned. Thymus hyperplasia is present in two thirds of all patients with myasthenia gravis. (12 Dec 1998) |
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| endometrial hyperplasia | <gynaecology, pathology> Thickening of the endometrial lining due to an overgrowth of mucosal cells. Symptoms often include irregular vaginal bleeding, heavy or prolonged menstrual cycles and post-menopausal bleeding in older women. Origin: Gr. Plassein = to form (07 Apr 1998) |
| transmissible murine colonic hyperplasia | A disease of young mice caused by the bacterium Citrobacter freundii and characterised by diarrhoea and mucosal hyperplasia of the descending colon. (05 Mar 2000) |
| fibromuscular hyperplasia | Thickening of arterial media by fibrosis and muscular hyperplasia, usually involving the renal arteries and causing multifocal stenosis and hypertension; a variety of fibromuscular dysplasia. (05 Mar 2000) |
| focal epithelial hyperplasia | Hyperplasia of the mucous membrane of the lips, tongue, and less commonly, the buccal mucosa, floor of the mouth, and palate, presenting soft, painless, round to oval sessile papules about 1 to 4 mm in diameter. The condition usually occurs in children and young adults and has familial predilection, lasting for several months, sometimes years, before running its course. A viral aetiology is suspected, the isolated organism being usually the human papilloma virus. (12 Dec 1998) |
| focal nodular hyperplasia | <radiology> Focal nodules of normal hepatocytes, Kuppfer cells and bile ducts, F more than M, rare, benign, multiple in 20%, haemorrhage (most common complication) in only 2-3% (unlike hepatic adenoma), stellate fibrous septae (stellate scar), NM: normal or increased uptake on HIDA and sulfur colloid (12 Dec 1998) |
| gingival | Relating to the gums. (05 Mar 2000) |
| gingival abrasion | A lesion of the gingiva resulting from mechanical removal of a portion of the surface epithelium. (05 Mar 2000) |
| gingival abscess | An abscess confined to the gingival soft tissue. Synonym: gumboil, parulis. (05 Mar 2000) |
| gingival atrophy | The exposure of root surface by an apical shift in the position of the gingiva. (12 Dec 1998) |
| gingival clamp | A springlike metal piece encircling or grasping the cervix of a tooth and shaped so as to retract the gingival tissue. (05 Mar 2000) |
| gingival cleft | A fissure associated with pocket formation and lined by mixed gingival and pocket epithelium. (05 Mar 2000) |
| gingival contour | The shape or form of the gingiva, either natural or artificial, around the necks of the teeth. Synonym: gum contour. (05 Mar 2000) |
| gingival crest | The most coronal portion of the gingiva surrounding the tooth, the edge of the free gingiva. Synonym: cervical margin, gingival crest. (05 Mar 2000) |
| gingival crevice | The space between the surface of the tooth and the free gingiva. Synonym: sulcus gingivalis, gingival crevice, gingival space, subgingival space. (05 Mar 2000) |