Bilharzia
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  Bilharzia



Bilharzia

   Disease caused by worms that parasitize people. Also called schistosomiasis. Three main species of these trematode worms (flukes)--Schistosoma haematobium, S. japonicum, and S. mansoni - cause disease in humans. Larval forms of the parasite live in freshwater snails. The cercaria (form of the parasite) is liberated from the snail burrow into skin, transforms to the schistosomulum stage, and migrates to the urinary tract (S. haematobium), liver or intestine (S. japonicum, S.mansoni) where the adult worms develop. Eggs are shed into the urinary tract or the intestine and hatch to form miracidia (yet another form of the parasite) which then infect snails, completing the life cycle of the parasite.. Adult schistosome worms can seriously damage tissue. The name bilharzia comes from that of the short-lived German physician Theodor Bilharz (1825-1862).

RELATED TERMS
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Disease
Illness or sickness often characterized by typical patient problems (symptoms) and physical findings (signs). Disruption sequence: The events that occur when a fetus that is developing normally is subjected to a destructive agent such as the rubella (German measles) virus.

Forms
A management function in which standards and guidelines are developed for the developing, maintaining, and handling of forms and records.

Parasite
An organism that lives on or in the tissues of another organism and draws its nourishment from the host.

Skin
Skin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).

Liver
The largest organ in the body. The liver carries out many important functions, such as making bile, changing food into energy, and cleaning alcohol and poisons from the blood.

Intestine
The tube involved in digestion and extending from the stomach to the anus. Consists of the small intestine and the large intestine.

Adult
A person having attained full growth or maturity. Adults are of 19 through 44 years of age.

Eggs
Animal reproductive bodies, or the contents thereof, used as food. The concept is differentiated from OVUM, the anatomic or physiologic entity.

Tissue
Biological tissue is a group of cells that perform a similar function.The study of tissues is known as histology, or, in connection with disease, histopathology.The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope, though developments in electron microscopy, immunofluorescence, and frozen sections have all added to the sum of knowledge in the last couple of decades.

Bilharzia
Disease caused by worms that parasitize people. Also called schistosomiasis. Three main species of these trematode worms (flukes)--Schistosoma haematobium, S. japonicum, and S. mansoni - cause disease in humans. Larval forms of the parasite live in freshwater snails. The cercaria (form of the parasite) is liberated from the snail burrow into skin, transforms to the schistosomulum stage, and migrates to the urinary tract (S. haematobium), liver or intestine (S. japonicum, S.mansoni) where the adult worms develop. Eggs are shed into the urinary tract or the intestine and hatch to form miracidia (yet another form of the parasite) which then infect snails, completing the life cycle of the parasite.. Adult schistosome worms can seriously damage tissue. The name bilharzia comes from that of the short-lived German physician Theodor Bilharz (1825-1862).

Physician
A doctor. An authorized practitioner of medicine.



SIMILAR TERMS
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PREVIOUS AND NEXT TERMS
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Bilateral pneumonia
See: Pneumonia, bilateral.

Bile acid
An acid made by the liver that works with bile to break down fats. On a more technical level, bile acids are steroid carboxylic acids derived from cholesterol. The primary bile acids are cholic and chenodeoxycholic acids. They are conjugated with glycine or taurine before they are secreted into the bile.

Bile acid resin
Bile acid resins are substances that bind in the intestines with bile acids that contain cholesterol and are then eliminated in the stool. The major effect of bile acid resins is to lower LDL-cholesterol by about 10 to 20 percent. Small doses of resins can produce useful reductions in LDL-cholesterol. Bile acid resins are sometimes prescribed with a statin for patients with heart disease to increase cholesterol reduction. When these two drugs are combined, their effects are added together to lower LDL-cholesterol by over 40 percent.

Bile duct cancer
An uncommon type of cancer that arises from the bile duct, the tube that connects the liver and the gallbladder to the small intestine.

Bile sludge
An uncommon type of cancer that arises from the bile duct, the tube that connects the liver and the gallbladder to the small intestine.

Bilharzia

Biliary
Having to do with the gallbladder, bile ducts, or bile. The biliary system itself consists of the gallbladder and bile ducts and, of course, the bile.

Biliary compression
Abnormal pressure on the biliary tree compromising the normal drainage of bile.

Biliary decompression
A procedure done to remove pressure on the biliary tree and permit the normal drainage of bile.

Biliary sand
Biliary sand is a term mostly used by surgeons when they remove the gallbladder to describe uncountable, small particles in bile that are visible to the naked eye. Biliary sand may be looked upon as a stage in the growth of the particles that comprise sludge (which are microscopic and not visible to the naked eye) and gallstones, which are large enough to be counted easily. The composition of biliary sand varies but is similar to the composition of gallstones. The most common components of biliary sand are cholesterol crystals and calcium salts.

Biliary sludge
A mixture of microscopic particulate matter in bile that occurs when particles of material precipitate from bile. (Bile is the fluid that is made by the liver. It is stored in the gallbladder until after a meal when it passes out of the gallbladder and through the common bile duct into the intestine to help digest fat in the meal.)

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