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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

chorea cordis
Cardiac irregularity related to chorea. ... (05 Mar 2000) ...

chorea dimidiata
Synonym for hemichorea ... Chorea involving the muscles on one side only. ... Synonym: chorea dimidiata, hemilateral chorea. ... (05 Mar 2000) ...

chorea gravidarum
Sydenham's chorea occurring in pregnancy. ... (05 Mar 2000) ...

chorea major
A spasmodic attack occurring in patients with conversion hysteria. ... (05 Mar 2000) ...

chorea minor
Synonym for Sydenham's chorea ... A postinfectious chorea appearing several months after a streptococcal infection with subsequent rheumatic fever. The chorea typically involves the distal limbs and is associated with hypotonia and emotional lability. Improvement occurs over weeks or months and exacerbations occur without associated infection recurr …

chorea-acanthocytosis
A slowly progressive familial chorea with associated mental deterioration, diminished deep tendon reflexes, bilateral atrophy of the putamen and caudate nuclei and acanthocytosis (thorny appearance of blood erythrocytes); the disorder typically begins around late adolescence; inheritance is usually autosomal recessive. ... Synonym: acanthocytosis wi …

choreal
Relating to chorea. ... (05 Mar 2000) ...

choreic
Relating to or of the nature of chorea. ... (05 Mar 2000) ...

choreic abasia
Abasia related to choreiform movements of the legs. ... (05 Mar 2000) ...

choreic movement
An involuntary spasmodic twitching or jerking in groups of muscles not associated in the production of definite purposeful movement's. ... (05 Mar 2000) ...

choreiform
Synonym for choreoid ... Resembling chorea. ... Synonym: choreiform. ... (05 Mar 2000) ...

choreo-
Chorea. ... (05 Mar 2000) ...

choreoathetoid
Pertaining to or characterised by choreoathetosis. ... (05 Mar 2000) ...

choreoathetosis
A condition characterised by aimless muscle movements and involuntary motions. ... (27 Sep 1997) ...

choreoid
Resembling chorea. ... Synonym: choreiform. ... (05 Mar 2000) ...

choreophrasia
Continual repetition of meaningless phrases. ... Origin: choreo-+ G. Phrasis, speaking ... (05 Mar 2000) ...

chorio-
Any membrane, especially that which encloses the foetus. ... Origin: G. Chorion, membrane ... (05 Mar 2000) ...

chorioadenoma
<tumour> A benign neoplasm of chorion, especially with hydatidiform mole formation. ... Chorioadenoma destruens, hydatidiform mole in which there is an unusual degree of invasion of the myometrium or its blood vessels, causing haemorrhage, necrosis, and occasionally rupture of the uterus or embolism of molar tissue to the lungs; there is marke …

chorioallantoic
Pertaining to the chorioallantois. ... (05 Mar 2000) ...

chorioallantoic graft
Transplanting of living material to the chorioallantoic membrane of the embryonic chick. ... (05 Mar 2000) ...

chorioallantoic membrane
Extraembryonic membrane formed in birds and reptiles by the apposition of the allantois to the inner face of the chorion. The chorioallantoic membrane is highly vascularised and is used experimentally as a site upon which to place pieces of tissue in order to test their invasive capacity. ... (18 Nov 1997) ...

chorioallantoic placenta
A placenta (such as that of primates) in which the chorion is formed by the fusion of the allantoic mesoderm and vessels to the inner face of the serosa. ... (05 Mar 2000) ...

chorioallantois
Extraembryonic membrane formed by the fusion of the allantois with the serosa or false chorion. In mammals it forms the foetal portion of the placenta; in avian embryos it is fused with the shell. ... (05 Mar 2000) ...

chorioamnionic placenta
A form of placentation in which the amnion is fused to the inside of the chorion, thus permitting interchange of water and electrolytes between mother and foetus. ... (05 Mar 2000) ...

chorioamnionitis
An inflammatory process involving the chorion, its foetal blood vessels, the umbilical cord, and the amnion by extension of the inflammation, as the amnion itself has no blood supply. This inflammatory process is potentially fatal to mother and foetus. ... (12 Dec 1998) ...

chorioangioma
<tumour> Benign tumour of placental blood vessels (haemangioma), usually of no clinical significance; large tumours may be associated with placental insufficiency and foetal hydrops; in some instances, the stroma is edematous and may resemble myxomatous tissue. ... See: chorioangiosis. ... Origin: chorion + angioma ... (05 Mar 2000) ...

chorioangiomatosis
Synonym for chorioangiosis ... An abnormal increase in the number of vascular channels in placental villi; severe chorioangiosis is associated with a high incidence of neonatal death and major congenital malformations. ... Synonym: chorioangiomatosis. ... Origin: chorio-+ G. Angeion, vessel, + -osis, condition ... (05 Mar 2000) ...

chorioangiosis
An abnormal increase in the number of vascular channels in placental villi; severe chorioangiosis is associated with a high incidence of neonatal death and major congenital malformations. ... Synonym: chorioangiomatosis. ... Origin: chorio-+ G. Angeion, vessel, + -osis, condition ... (05 Mar 2000) ...

chorioblastoma
<oncology, tumour> A malignant and rapidly growing tumour which arises from foetal tissue. The preceding factor is a hydatidiform mole. ... Symptoms include continued vaginal bleeding in a women with a recent history of hydatidiform mole, abortion or term pregnancy. ... (27 Sep 1997) ...

choriocapillaris
Synonym for choriocapillary layer ... The internal layer of the choroidea of the eye, composed of a very close capillary network. ... Synonym: lamina choroidocapillaris, choriocapillaris, entochoroidea, lamina choriocapillaris, membrana choriocapillaris, Ruysch's membrane. ... (05 Mar 2000) ...

choriocapillary layer
The internal layer of the choroidea of the eye, composed of a very close capillary network. ... Synonym: lamina choroidocapillaris, choriocapillaris, entochoroidea, lamina choriocapillaris, membrana choriocapillaris, Ruysch's membrane. ... (05 Mar 2000) ...

choriocarcinoma
<oncology> Malignant tumour of trophoblast. ... (18 Nov 1997) ...

choriocele
A hernia of the choroid coat of the eye through a defect in the sclera. ... Origin: chorio-+ G. Kele, hernia ... (05 Mar 2000) ...

chorioepithelioma
Synonym for choriocarcinoma ... <oncology> Malignant tumour of trophoblast. ... (18 Nov 1997) ...

choriogonadotropin
Synonym for chorionic gonadotropin ... A glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the oestrogen and progesterone …

chorioid-
Chorioido- ... For words beginning thus and not found here, see choroid-, choroido-. ... (05 Mar 2000) ...

chorioma
<tumour> Rarely used term for a benign or malignant tumour of chorionic tissue. ... (05 Mar 2000) ...

choriomammotropin
human placental lactogen ...

choriomeningitis
<pathology> A form of meningitis which involves the choroid plexus, particularly the third and fourth ventricles. ... (27 Sep 1997) ...

chorion
1. Protective membrane around the eggs of insects and fishes. ... 2. Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the tropoblast. ... (18 Nov 1997) ...

chorion frondosum
The part of the chorion where the villi persist, forming the foetal part of the placenta. ... Synonym: shaggy chorion. ... (05 Mar 2000) ...

chorion laeve
The portion of the chorion from which the villi disappear in the later stages of pregnancy. ... Synonym: smooth chorion. ... (05 Mar 2000) ...

chorionic
Referring to the chorion or membrane enclosing the foetus. ... (09 Oct 1997) ...

chorionic ectoderm
Synonym for trophoblast ... <embryology> Extra embryonic layer of epithelium that forms around the mammalian blastocyst and attaches the embryo to the uterus wall. ... Forms the outer layer of the chorion and together with maternal tissue will form the placenta. ... (18 Nov 1997) ...

chorionic epithelioma
An obsolete term for choriocarcinoma. ... (05 Mar 2000) ...

chorionic gonadotrophic hormone
Synonym for chorionic gonadotropin ... A glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the oestrogen and progesterone …

chorionic gonadotrophin
Synonym for human chorionic gonadotrophin ... <hormone, tumour marker> A hormone that is produced by the developing placenta and by the fertilized egg after implantation in the uterine wall. ... This hormone is measured in the blood to determine pregnancy. Human chorionic gonadotrophin increases in quantity through the first trimester of pregna …

chorionic gonadotropin
A glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the oestrogen and progesterone required for the integrity of conceptu …

chorionic gonadotropin unit
The specific gonadotropic activity of 0.1 mg of the standard preparation of chorionic gonadotropin originating from the urine or placentas of pregnant women. ... (05 Mar 2000) ...

chorionic gonadotropin, human
A human hormone made by chorionic cells (in the foetal part of the placenta), hCG is directed at the gonads and stimulates them. HCG becomes detectable (by immunologic means) within days of fertilization and forms the foundation of the common pregnancy tests. The level of hCG in maternal serum also enters as one component in the double and the trip …

chorionic growth hormone-prolactin
human placental lactogen ...

chorionic plate
That portion of the chorionic wall in the region of its uterine attachment; it consists of the mesoderm that lines the chorionic vesicle and, on the maternal side, of the trophoblast that lines the intervillous spaces; in the last half of gestation, the mesodermal connective tissue is largely replaced by fibrinoid material, and the amniotic membran …

chorionic sac
Synonym for chorion ... 1. Protective membrane around the eggs of insects and fishes. ... 2. Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the tropoblast. ... (18 Nov 1997) ...

chorionic villi
<anatomy> The vascular projections from the chorion. ... (27 Sep 1997) ...

chorionic villi sampling
A method for diagnosis of foetal diseases by sampling the cells of the placental chorionic villi for DNA analysis, presence of bacteria, concentration of metabolites, etc. The advantage over amniocentesis is that the procedure can be carried out in the first trimester. ... (12 Dec 1998) ...

chorionic villus biopsy
Transcervical or transabdominal sampling of the chorionic villi for genetic analysis. ... (05 Mar 2000) ...

chorionic villus sampling
<procedure> A procedure for obtaining a sample of chorionic villi for the purpose of genetic testing, usually performed between 9 and 12th weeks of pregnancy. ... Amniocentesis testing has greatly supplanted the use of this form of genetic testing. ... (27 Sep 1997) ...

Chorioptes
A genus of cosmopolitan and very common mange mites (family Psoroptidae) that cause chorioptic or symbiotic domestic animal mange, characterised by restriction of the mange to certain parts of the animal's body. Various species described, i.e., Chorioptes equi of horses, Chorioptes caprae of goats, Chorioptes ovis of sheep, Chorioptes cuniculi of r …

chorioptic mange
Mange caused by mites of the genus Chorioptes; in many cases it involves the skin of much of the body. ... (05 Mar 2000) ...

chorioretinal
Relating to the choroid coat of the eye and the retina. ... Synonym: retinochoroid. ... (05 Mar 2000) ...

chorioretinitis
<pathology> Inflammation of the choroid and retina. ... (27 Sep 1997) ...

chorioretinopathy
A primary abnormality of the choroid with extension to the retina. ... See: choroidopathy. ... (05 Mar 2000) ...

choriovitelline placenta
A placenta (seen in some lower animals) in which the chorion is formed by the fusion of yolk-sac mesoderm and vessels to the inner face of the serosa. ... (05 Mar 2000) ...

choripetalous
<botany> Polypetalous, having unconnected or separate petals. ... (09 Oct 1997) ...

chorismate mutase
<enzyme> An isomerase that catalyses the conversion of chorismic acid to prephenic acid. ... Chemical name: Chorismate pyruvatemutase ... Registry number: EC 5.4.99.5 ... (12 Dec 1998) ...

chorismate pyruvate-lyase
<enzyme> Forms 4-hydroxybenzoic acid for ubiquinone biosynthesis; chorismate pyruvate-lyase (amino-accepting) is anthranilate synthase ... Registry number: EC 4.1.3.- ... Synonym: ubic gene product, chorismate lyase ... (26 Jun 1999) ...

chorismic acid
<chemical> Trans-3[1-carboxyvinyl-oxy]-4-hydroxy-1,5-cyclohexadiene-1-carboxylic acid. ... Chemical name: 1,5-Cyclohexadiene-1-carboxylic acid, 3-((1-carboxyethenyl)oxy)-4-hydroxy-, (3R-trans)- ... (12 Dec 1998) ...

chorista
A focus of tissue that is histologically normal per se, but is not normally found in the organ or structure in which it is located; e.g., tissue displaced, during development, from its normal site. ... Compare: choristoma. ... Origin: G. Choristos, separated ... (05 Mar 2000) ...

choristoblastoma
<tumour> An autonomous neoplasm composed of relatively undifferentiated cells of a choristoma. ... Origin: choristoma + blastoma ... (05 Mar 2000) ...

choristoma
<radiology> Microscopically normal cells or tissues in abnormal locations (Robbins and Cotran, p. 587f), adrenal choristoma = myelolipoma ... (12 Dec 1998) ...

choroid
<anatomy> Middle layer of the vertebrate eye, between retina and sclera. ... Well vascularised and also pigmented to throw light back onto the retina (the tapetum is an irridescent layer in the choroid of some eyes). Not to be confused with the choroid plexus, a highly vascularised region of the roof of the ventricles of the vertebrate brain t …

choroid branches
The choroid branches: ramus choroidei posteriores laterales, lateral posterior choroid branches of posterior cerebral artery distributed to the choroid plexus of the lateral ventricle; ramus choroidei posteriores mediales, medial posterior choroid branches of posterior cerebral artery distributed to the choroid plexus of the third ventricle; ramus …

choroid diseases
Disorders of the choroid including hereditary choroidal diseases, neoplasms, and other abnormalities of the vascular layer of the uvea. ... (12 Dec 1998) ...

choroid fissure
Synonym for optic fissure ... In the embryo, the temporary gap in the ventral margin of the developing optic cup. ... Synonym: choroid fissure, choroid fissure, choroidal fissure. ... (05 Mar 2000) ...

choroid glomus
A marked enlargement of the choroid plexus of the lateral ventricle at the junction of the central part with the inferior horn. ... Synonym: glomus choroideum, choroid skein. ... (05 Mar 2000) ...

choroid haemorrhage
Haemorrhage from the vessels of the choroid. ... (12 Dec 1998) ...

choroid neoplasms
Tumours of the choroid; most common intraocular tumours are malignant melanomas of the choroid. These usually occur after puberty and increase in incidence with advancing age. Most malignant melanomas of the uveal tract develop from benign melanomas (nevi). ... (12 Dec 1998) ...

choroid plexus
<radiology> Formed by the invagination of ependyma into ventricles CP of lateral and third ventricles are continuous, extends posteriorly to temporal horn, 3rd and two lateral ventricles continuous at interventricular foramen CP of fourth ventricle is seperate, shape of a T, vertical limb extends from near Magendie's foramen to the fastigium, …

choroid plexus neoplasms
Neoplasms of the choroid plexus, blood vessels of the pia mater that project into the brain ventricles. ... (12 Dec 1998) ...

choroid plexus of fourth ventricle
One of two vascular fringes of pia mater projecting on either side from the lower part of the roof of the fourth cerebral ventricle. ... Synonym: plexus choroideus ventriculi quarti. ... (05 Mar 2000) ...

choroid plexus of lateral ventricle
The vascular fringe that projects from the choroidal fissure into each lateral ventricle. ... Synonym: plexus choroideus ventriculi lateralis. ... (05 Mar 2000) ...

choroid plexus of third ventricle
The double row of vascular projections from the undersurface of the tela choroidea where it roofs over the third ventricle. ... Synonym: plexus choroideus ventriculi tertii. ... (05 Mar 2000) ...

choroid plexus papilloma
<radiology> Isodense or hyperdense enhancing mass, location: usually atrium of lateral ventricle, age: usually less than 10 yrs, complications: non-obstructive hydrocephalus ... (12 Dec 1998) ...

choroid skein
Synonym for choroid glomus ... A marked enlargement of the choroid plexus of the lateral ventricle at the junction of the central part with the inferior horn. ... Synonym: glomus choroideum, choroid skein. ... (05 Mar 2000) ...

choroid tela of fourth ventricle
The sheet of pia mater covering the lower part of the ependymal roof of the fourth ventricle. ... Synonym: tela choroidea ventriculi quarti, tela choroidea inferior. ... (05 Mar 2000) ...

choroid tela of third ventricle
A double fold of pia mater, enclosing subarachnoid trabeculae, between the fornix above and the epithelial roof of the third ventricle and the thalami below; at each lateral margin is a vascular fringe projecting into the choroidal fissure of the lateral ventricle; on its undersurface are several small vascular projections filling the folds of the …

choroid veins of eye
Synonym for vortex veins ... Several veins (usually four) from the vascular tunic formed of veins accompanying the posterior ciliary arteries and the ciliary body; then drain into the superior or inferior ophthalmic vein. ... Synonym: venae vorticosae, venae choroideae oculi, choroid veins of eye, Stensen's veins, vasa vorticosa, vorticose veins. ... …

choroidal
Relating to the choroid (choroidea). ... (05 Mar 2000) ...

choroidal fissure
The narrow cleft along the medial wall of the lateral ventricle along the margins of which the choroid plexus is attached; it lies between the upper surface of the thalamus and lateral edge of the fornix in the central part of the ventricle and between the terminal stria and fimbria hippocampi in the inferior horn. ... Synonym: fissura choroidea. …

choroidal ring
A lightly pigmented crescent or ring adjacent to the optic disk. ... (05 Mar 2000) ...

choroidal vascular atrophy
Atrophy affecting either all choroidal vessels or only the choriocapillaris, occurring either diffusely or confined to the posterior pole of the eye. ... (05 Mar 2000) ...

choroidea
Synonym: choroid. ... Origin: see choroid ... (05 Mar 2000) ...

choroideraemia
An x chromosome-linked abnormality characterised by atrophy of the choroid and degeneration of the retinal pigment epithelium causing night blindness. ... (12 Dec 1998) ...

choroiditis
<pathology> Inflammation of the choroid, a membrane or coat of the eyeball. ... (27 Sep 1997) ...

choroido-
The choroid. ... (05 Mar 2000) ...

choroidocyclitis
Inflammation of the choroid coat and the ciliary body. ... Origin: choroido-+ G. Kyklos, circle ... (05 Mar 2000) ...

choroidopathy
Noninflammatory degeneration of the choroid. ... (05 Mar 2000) ...

choroidoretinitis
Synonym for retinochoroiditis ... Inflammation of the retina extending to the choroid. ... Synonym: chorioretinitis, choroidoretinitis. ... Origin: retinochoroid + G. -itis, inflammation ... (05 Mar 2000) ...

choroidosis
An obsolete term for choroidopathy. ... (05 Mar 2000) ...

Chotzen, F
<person> 20th century German physician. ... See: Chotzen's syndrome. ... (05 Mar 2000) ...