| keratinous cyst | An epithelial cyst containing keratin. (05 Mar 2000) |
|---|---|
| keratins | Group of highly insoluble fibrous proteins (of high _ helical content) which are found as constituents of the outer layer of vertebrate skin and of skin related structures such as hair, wool, hoof and horn, claws, beaks and feathers. Extracellular keratins are derived from cytokeratins, a large and diverse group of intermediate filament proteins. (18 Nov 1997) |
| keratitis | <ophthalmology> Inflammation of the cornea. Compare: keratoconjunctivitis. (18 Nov 1997) |
| keratitis disciformis | Large disk-shaped infiltration of the central or paracentral corneal stroma. This lesion is deep and nonsuppurative and is seen in virus infections, particularly herpetic. Synonym: keratitis disciformis. (05 Mar 2000) |
| keratitis filamentosa | A condition characterised by the formation of epithelial filaments of varying size and length on the corneal surface. Synonym: keratitis filamentosa. (05 Mar 2000) |
| keratitis linearis migrans | A deep, linear corneal opacity stretching from limbus to limbus; associated with congenital syphilis. (05 Mar 2000) |
| keratitis nummularis | Coin-shaped or round, discrete, grayish areas 0.5 to 1.5 mm in diameter scattered throughout the various layers of the cornea. Synonym: Dimmer's keratitis. (05 Mar 2000) |
| keratitis profunda | An inflammation of the posterior corneal stroma. Synonym: diffuse deep keratitis. (05 Mar 2000) |
| keratitis sicca | Drying and inflammation of the conjunctiva as a result of insufficient lacrimal secretion. When found in association with xerostomia and polyarthritis, it is called sjogren's syndrome. (12 Dec 1998) |
| keratitis, dendritic | A form of herpetic keratitis characterised by the formation of small vesicles which break down and coalesce to form recurring dendritic ulcers, characteristically irregular, linear, branching, and ending in knoblike extremities. (12 Dec 1998) |
| keratitis, herpetic | A superficial, epithelial herpes virus hominis infection of the cornea, characterised by the presence of small vesicles which may break down and coalesce to form dendritic ulcers (keratitis, dendritic). (12 Dec 1998) |
| kerato- | A confusing prefix it can refer to the cornea (as in keratitis and keratocornea) or to horny tissue (as in keratin and keratosis). (12 Dec 1998) |
| keratoacanthoma | A benign, non-neoplastic, usually self-limiting epithelial lesion closely resembling squamous cell carcinoma clinically and histopathologically. It occurs in solitary, multiple, and eruptive forms. The solitary and multiple forms occur on sunlight exposed areas and are identical histologically; they affect primarily white males. The eruptive form usually involves both sexes and appears as a generalised papular eruption. (12 Dec 1998) |
| keratoangioma | A discrete, pink to red telangiectasia having a tendency to undergo secondary epithelial changes, including acanthosis and hyperkeratosis. An underlying vascular abnormality is present in many cases. The term angiokeratoma is applied to a number of quite distinct conditions which share a common clinical presentation with asymptomatic hyperkeratotic vascular skin lesions and a histological combination of superficial dermal vascular ectasia. (12 Dec 1998) |
| keratoatrophoderma | Synonym: porokeratosis. Origin: kerato-+ G. Atrophia, atrophy, + derma, skin (05 Mar 2000) |