| maxillary sinusitis | Inflammation of the maxillary sinus. In most cases it is the result of infection by the bacteria haemophilus influenzae, streptococcus pneumoniae, and staphylococcus aureus. This condition may be acute or chronic. (12 Dec 1998) |
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| sinusitis | <pathology> Inflammation of a sinus. The condition may be purulent or nonpurulent, acute or chronic. Depending on the site of involvement it is known as ethmoid, frontal, maxillary or sphenoid sinusitis. (18 Nov 1997) |
| sphenoid sinusitis | Inflammation of the sphenoid sinus. This condition usually is accompanied by pansinusitis and may present itself in an acute or chronic form. (12 Dec 1998) |
| infectious sinusitis of turkeys | See: chronic respiratory disease. (05 Mar 2000) |
| ethmoid sinusitis | Inflammation of the ethmoid sinus. It may present itself as an acute (associated with viral rhinitis) or chronic (associated with allergic or hyperplastic sinusitis) condition. (12 Dec 1998) |
| frontal sinusitis | Inflammation of the frontal sinus; in most cases the infection is caused by the bacteria streptococcus pneumoniae and haemophilus influenzae. This condition may be acute or chronic. (12 Dec 1998) |
| persistent anterior hyperplastic primary vitreous | A unilateral congenital abnormality occurring in full-term infants; characterised by a retrolental fibrovascular membrane formed by persistent primary vitreous with remnants of the hyaloid artery and tunica vasculosa lentis; associated with leukokoria, microphthalmos, shallow anterior chamber, and elongated ciliary processes. (05 Mar 2000) |
| persistent posterior hyperplastic primary vitreous | A unilateral congenital anomaly in full-term infants; associated with a congenital retinal fold and a vitreous membranous stalk containing remnants of the hyaloid artery. (05 Mar 2000) |
| hyperplastic | 1. Of or pertaining to hyperplasia. 2. <biology> Tending to excess of formative action. Source: Websters Dictionary (01 Mar 1998) |
| hyperplastic arteriosclerosis | Hyperplasia of the intima and internal elastic layer and hypertrophy of the media independent of atheromatous lesions. (05 Mar 2000) |
| hyperplastic cholecystosis | <radiology> Variety of degenerative and proliferative changes of gallbladder, wall characterised by hyperconcentration, hyperexcitability, and hyperexcretion, incidence: 30-50% of cholecystectomy specimens, M:F = 1:6 types: cholesterolosis, adenomyomatosis of gallbladder see: focal gallbladder wall thickening (12 Dec 1998) |
| hyperplastic gastric polyp | <radiology> Regeneration polyp, inflammatory polyp, most common type of gastric polyp (75-90%), histology: proliferated gastric mucosa with acute and chronic inflammatory infiltrates in lamina propria, location: randomly distributed in stomach, associated with, chronic atrophic gastritis, pernicious anaemia, findings: sharply delineated polyp with smooth circular border, Mexican hat sign: stalk seen en face overlying the head of the polyp, sessile/pedunculate; usually multiple, usually less than 1 cm, no contour defect in stomach (12 Dec 1998) |
| hyperplastic gingivitis | Gingivitis of long-standing duration in which the gingiva becomes enlarged and firm due to proliferation of fibrous connective tissue. (05 Mar 2000) |
| hyperplastic graft | A graft in active proliferation. (05 Mar 2000) |
| hyperplastic inflammation | An inflammatory reaction in which the distinguishing feature is an actual increase in the number of tissue cells, especially the reticuloendothelial macrophages, in contrast to cells exuded from blood vessels; in addition, exudates of various types are likely to be observed in granulomas and other forms of proliferative inflammation, but the latter may occur without an exudate being formed (as in certain infections caused by virus). Synonym: hyperplastic inflammation. (05 Mar 2000) |