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Choanal atresia
Choanal atresia Blockage of the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. There are two choanae. The choanae must be open to permit breathing through the nose. Choanal atresia can occur as an isolated birth defect in an otherwise normal baby or it may be part of a syndrome such as the CHARGE association. Surgery is needed to repair choanal atresia.
RELATED TERMS--------------------------------------
Choana
The passageway from the back of one side of the nose to the throat. There are two choanae, one on either side of the nose. The choanae must be open to permit breathing through the nose. The noun choana is less used than the adjective choanal, as in choanal atresia (blockage of the choanal passage) and choanal stenosis (narrowing of the choanal passage).
Choanae
The plural of choana.
Breathing
The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction, and then exhaled due to muscle relaxation.
Choanal
Pertaining to the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. The choanae must be open to permit breathing through the nose. Choanal atresia is blockage of the choanal passageway while choanal stenosis is narrowing of that passageway. The word choanal is pronounced co-anal but it has nothing to do with the anus.
Atresia
Congenital absence or closure of one of the openings or tubular organs of the body.
Syndrome
A grouping of signs and symptoms, based on their frequent co-occurrence, that may suggest a common underlying pathogenesis, course, familial pattern, or treatment selection.
Association
1. In dysmorphology (the study of birth defects), the nonrandom occurrence in two or more individuals of a pattern of multiple anomalies (birth defects) not known to be a malformation syndrome (such as Down syndrome), a malformation sequence (of events) or what is called a polytopic field defect (in which all of the defects are concentrated in one particular area of the body). An example of an association in dysmorphology is the VACTERL association of birth defects. 2. In genetics, the occurrence together of two or more characteristics more often than would be expected by chance alone. An example of association involves a feature on the surface of white blood cells called HLA (HLA stands for human leukocyte antigen). A particular HLA type, HLA type B-27, is associated with an increased risk for a number of diseases including ankylosing spondylitis. The extent of the association is enormous. Ankylosing spondylitis is 87 times more likely to occur in people with HLA B-27 than in the general population.
Surgery
Treating diseases or other medical conditions by operating on a patient to remove or repair parts of the body.
SIMILAR TERMS--------------------------------------
Choa Chu Kang Polyclinic
The Choa Chu Kang Polyclinic is a hospital in Singapore.
Choana
The passageway from the back of one side of the nose to the throat. There are two choanae, one on either side of the nose. The choanae must be open to permit breathing through the nose. The noun choana is less used than the adjective choanal, as in choanal atresia (blockage of the choanal passage) and choanal stenosis (narrowing of the choanal passage).
Choanae
The plural of choana.
Choanal
Pertaining to the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. The choanae must be open to permit breathing through the nose. Choanal atresia is blockage of the choanal passageway while choanal stenosis is narrowing of that passageway. The word choanal is pronounced co-anal but it has nothing to do with the anus.
Choanal stenosis
Abnormal narrowing of the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. There are two choanae. The choanae must be open to permit breathing through the nose. Choanal stenosis can occur as an isolated birth defect in an otherwise normal baby or it may be part of a syndrome. Surgery is needed to repair choanal stenosis.
PREVIOUS AND NEXT TERMS--------------------------------------
Chlorpyrifos
An insecticide that has adverse neurological effects. Also known as Dursban.
Chlortetracycline
The first drug of the tetracycline family.
Choana
The passageway from the back of one side of the nose to the throat. There are two choanae, one on either side of the nose. The choanae must be open to permit breathing through the nose. The noun choana is less used than the adjective choanal, as in choanal atresia (blockage of the choanal passage) and choanal stenosis (narrowing of the choanal passage).
Choanae
The plural of choana.
Choanal
Pertaining to the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. The choanae must be open to permit breathing through the nose. Choanal atresia is blockage of the choanal passageway while choanal stenosis is narrowing of that passageway. The word choanal is pronounced co-anal but it has nothing to do with the anus.
Choanal atresia
Choanal stenosis
Abnormal narrowing of the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. There are two choanae. The choanae must be open to permit breathing through the nose. Choanal stenosis can occur as an isolated birth defect in an otherwise normal baby or it may be part of a syndrome. Surgery is needed to repair choanal stenosis.
Chocolate
A food or flavoring made from the seeds of the cacao or chocolate tree. Chocolate is rich in flavinoids, compounds that act as antioxidants. Flavinoids may also lower blood pressure and improve blood flow, by regulating the synthesis of nitric oxide, which dilates blood vessels. Flavinoids, like aspirin, help keep platelets from aggregating on vessel walls. Thus, chocolate may have health benefits, provided it is consumed in moderation.
Cholangiogram
A radiologic procedure used to look at the gallbladder and bile ducts.
Cholangiography, percutaneous transhepatic
Radiographic examination of the liver and bile ducts done by inserting a thin needle through the skin into the liver and injecting contrast medium in order to visualize blockage of the liver and bile ducts.
Cholecalciferol
Vitamin D3.
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