| collodion | <chemical> A nitrocellulose solution in ether and alcohol. Collodion has a wide range of uses in industry including applications in the manufacuture of photographic film, in fibres, in lacquers, and in engraving and lithography. In medicine it is used as a drug solvent and a wound sealant. Pharmacological action: pharmaceutic aid, tissue adhesives. Chemical name: Cellulose, nitrate (12 Dec 1998) |
|---|---|
| collodion baby | A newborn child with lamellar ichthyosis; at birth, the skin is bright red, shiny, translucent, and drawn tight, giving a distorted appearance (as if having been painted with collodion) of immobilization of the face; contraction of the skin causes ectropion, a pressed down appearance of the nose, and a gaping of the mouth and the labia; autosomal dominant inheritance. (05 Mar 2000) |
| collodion vesicans | A powdered chloroform extract of cantharides in flexible collodion; a vesicant. Synonym: blistering collodion, collodion vesicans. (05 Mar 2000) |
| collodium | Synonym: collodion. Origin: G. Kolla, glue, + eidos, appearance (05 Mar 2000) |
| colloid | <chemistry> Microscopic particles suspended in some sort of liquid medium. The particles are between one nanometre and one micrometre in size and can be macromolecules. (09 Oct 1997) |
| colloid acne | Yellow papules developing in sun-damaged skin of the head and backs of the hands, composed of colloid material in the dermis resembling amyloid but with a different ultrastructure. Synonym: colloid acne, colloid pseudomilium, elastosis colloidalis conglomerata. Origin: L. Milium, millet (05 Mar 2000) |
| colloid adenoma | <tumour> A follicular adenoma of the thyroid, composed of large follicles containing colloid. Synonym: macrofollicular adenoma. (05 Mar 2000) |
| colloid bath | A bath prepared by adding soothing agents such as sodium bicarbonate or oatmeal to the bath water to relieve skin irritation and pruritus. (05 Mar 2000) |
| colloid bodies | Eosinophilic hyaline spherical body's seen in or just beneath the epidermis, particularly in lichen planus, formed by necrosis of individual basal cells. Synonym: colloid bodies. (05 Mar 2000) |
| colloid cancer | <tumour> A variety of adenocarcinoma in which the neoplastic cells secrete conspicuous quantities of mucin, and, as a result, the neoplasms are likely to be glistening, sticky, and gelatinoid in consistency. Synonym: colloid cancer, colloid carcinoma. (05 Mar 2000) |
| colloid carcinoma | <tumour> A variety of adenocarcinoma in which the neoplastic cells secrete conspicuous quantities of mucin, and, as a result, the neoplasms are likely to be glistening, sticky, and gelatinoid in consistency. Synonym: colloid cancer, colloid carcinoma. (05 Mar 2000) |
| colloid corpuscle | One of a number of small ovoid or rounded, sometimes laminated, bodies resembling a grain of starch and found in nervous tissue, in the prostate, and in pulmonary alveoli; of little pathological significance, and apparently derived from degenerated cells or proteinaceous secretions. Synonym: amniotic corpuscle, amylaceous corpuscle, amyloid corpuscle, colloid corpuscle. (05 Mar 2000) |
| colloid cyst | A cyst with gelatinous contents. (05 Mar 2000) |
| colloid degeneration | A degeneration similar to mucoid degeneration, in which the material is inspissated. (05 Mar 2000) |
| colloid goiter | A form of goiter in which the contents of the follicles increase greatly, causing pressure atrophy of the epithelium so that the gelatinous matter predominates in the tumour. Synonym: struma colloides. (05 Mar 2000) |