| pigment cell | Cells that contain pigment: See: melanocytes, chromatophores. (18 Nov 1997) |
|---|---|
| pigment cell of skin | Special cells in the skin and the eye that synthesise melanin pigments. Clusters of melanocytes often appear on the skin as moles. In fish and reptiles, the pigments are stored in melanosomes (chromatophores) that can be redistributed in the cytoplasm to change pigment patterns. Synonym: melanodendrocyte. Origin: melano-+ G. + kytos, a hollow (cell) (29 Sep 1997) |
| pigment cells of iris | Cell's of the stromal layer of the iris; in dark eyes (but not in blue) they contain granules of pigment. (05 Mar 2000) |
| pigment cells of retina | Cell's in the outermost layer of the retina that contain pigment granules. (05 Mar 2000) |
| pigment cirrhosis | Cirrhosis of the liver associated with dark brown discoloration seen in haemochromatosis. (05 Mar 2000) |
| pigment epitheliopathy | An acute disease manifested by rapid loss of vision, and multifocal, cream-coloured placoid lesions of the retinal pigment epithelium; resolves with restoration of vision. (05 Mar 2000) |
| pigment epithelium | Epithelium composed of cells containing granules of pigment or melanin, as in the retinal or iris pigment layer. (05 Mar 2000) |
| pigment epithelium of eye | Epithelium in the retina, ciliary body, and iris containing pigment granules. (12 Dec 1998) |
| pigment epithelium of optic retina | pigmented part of retina |
| pigment induration of the lung | A condition characterised by firmness of the lungs, and a brown colour associated with haemosiderin-pigmented macrophages in alveoli, consequent upon long-continued congestion due to heart disease. Synonym: pigment induration of the lung. (05 Mar 2000) |
| pigmentary | Of or pertaining to pigments; furnished with pigments. <medicine> Pigmentary degeneration, a morbid condition in which an undue amount of pigment is deposited in the tissues. Source: Websters Dictionary (01 Mar 1998) |
| pigmentary cirrhosis | Cirrhosis resulting from excessive deposits of iron in the liver, usually seen in haemochromatosis. (05 Mar 2000) |
| pigmentary glaucoma | Glaucoma associated with erosion of pigment from the posterior iris, and with an accumulation of pigment particles in the trabecular meshwork. (05 Mar 2000) |
| pigmentary retinopathy | <ophthalmology> Disease caused by overactivity of the pigmented retinal epithelial cells, leading to damage and occlusion of photoreceptors and blindness. (18 Nov 1997) |
| pigmentary syphilid | Lesions of secondary syphilis consisting of rounded white macules on the trunk. (05 Mar 2000) |