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1. macula 2. To lose a slight amount of blood through the vagina.
acoustic s.'s See macula of utricle, macula of saccule.
Bitot's s.'ssmall, circumscribed, lusterless, grayish white, foamy, greasy, triangular deposits on the bulbar conjunctiva adjacent to the cornea in the area of the palpebral fissure of both eyes; occurs in vitamin A deficiency.
blind s. 1. physiologic scotoma 2. mental scotoma 3. optic disk
blood s.'shemorrhagic graafian follicles seen in ovaries of mice, caused by injection of urine of pregnant women; a positive result in the now obsolete Aschheim-Zondek test for pregnancy.
blue s. 1. macula cerulea 2. mongolian s
Brushfield's s.'slight-colored condensations of the surface of the mid-iris; seen in Down syndrome.
café au lait s.'sPigmented cutaneous lesions, ranging from light to dark brown, and due to an excess of melanosomes in the malpighian cells, rather than to an excess of melanocytes; café au lait s.'s are one of the major cutaneous manifestations of neurofibromatosis (von Recklinghausen disease) with type 1 (peripheral) neurofibromatosis, almost always 6 or more café-au-lait s.'s can be found with at least some exceeding 1.5 cm in diameter. These are often accompanied by freckle-like s.'s in the axilla.
cherry-red s.the ophthalmoscopic appearance of the normal choroid beneath the fovea centralis, appearing as a red s. surrounded by white retinal edema in central artery closure or lipid infiltration in sphingolipidosis.Tay's cherry-red s;
corneal s.macula corneae
cotton-wool s.'scotton-wool patches, under patch
De Morgan's s.'ssenile hemangioma
Elschnig's s.'sisolated choroidal bright yellow or red s.'s with black pigment flecks at their borders, seen ophthalmoscopically in advanced hypertensive retinopathy.
Filatov's s.'sKoplik's s.'s
flame s.'shemorrhagic areas occurring in the nerve fiber layer of the retina.
focal s.the site of bombardment by electrons and emission of x-rays from the anode of an x-ray tube. See also focal spot size.
Fordyce's s.'sa condition marked by the presence of numerous small, yellowish white bodies or granules on the inner surface and vermilion border of the lips; histologically the lesions are ectopic sebaceous glands.Fordyce's disease, Fordyce's granules, pseudocolloid of lips;
Fuchs' black s.an area of pigment proliferation in the macular region in degenerative myopia.
Graefe's s.'ssmall areas over the vertebrae or near the supraorbital foramen, pressure upon which causes relaxation of blepharofacial spasm.
hot s.a region in a gene in which there is a putatively high rate of mutation; of the size of the region concerned, the readiness with which the mutation could be detected, and the possibility that selection against mutants at that point is less than against mutants elsewhere, all call for caution in making such claims.
hypnogenic s.a pressure-sensitive point on the body of certain susceptible persons, which, when pressed, causes the induction of sleep.
Koplik's s.'ssmall red s.'s on the buccal mucous membrane, in the center of each of which may be seen, in a strong light, a minute bluish white speck; they occur early in measles (morbilli), before the skin eruption, and are regarded as a pathognomonic sign of the disease.Filatov's s.'s;
liver s.senile lentigo
Mariotte's blind s.optic disk
milk s.'s 1. white plaques of hyalinized fibrous tissue situated in the epicardium overlying the right ventricle of the heart where it is not covered by lung;soldier's patches; 2. white macroscopic areas in the omentum, due to accumulation of macrophages and lymphocytes.tache laiteuse (1) ;
mongolian s.any of a number of dark bluish or mulberry-colored rounded or oval s.'s on the sacral region due to the ectopic presence of scattered melanocytes in the dermis. These congenital lesions are frequent in black, native American, and Asian children from 2 to 12 years, after which time they gradually recede; they do not disappear on pressure and are sometimes mistaken for bruises from child abuse.blue s. (2) , mongolian macula;
mulberry s.'sthe abdominal eruption in typhus fever.
rose s.'scharacteristic exanthema of typhoid fever; 10-20 small pink papules on the lower trunk lasting a few days and leaving hyperpigmentation.
Roth's s.'sa round white retina s. surrounded by hemorrhage in bacterial endocarditis, and in other retinal hemorrhagic conditions.
ruby s.'ssenile hemangioma
saccular s.macula of saccule
Soemmerring's s.macula retinae
spongy s.vascular zone
Tardieu's s.'sTardieu's ecchymoses, under ecchymosis
Tay's cherry-red s.cherry-red s
temperature s.one of a number of definitely arranged s.'s on the skin sensitive to heat and cold, but not to ordinary pressure or pain stimuli.
tendinous s.macula albida
Trousseau's s.meningitic streak
utricular s.macula of utricle
white s.macula albida
yellow s.macula retinae

 

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