Chiari-malformation sentence example

chiari-malformation
  • In addition to brain anomalies, Chiari malformation can also involve defects in the base of the skull and in the bony part of the spine.

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  • There are four types of Chiari malformation.

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  • Approximately 80-90 percent of children with Chiari malformation Type II also have hydrocephalus, a condition in which one or more of the ventricles becomes enlarged due to an accumulation of CSF.

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  • Type II Chiari malformation may be diagnosed prenatally by ultrasound or shortly after birth during medical evaluation of the accompanying spina bifida.

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  • Some neurologists do not consider it a Chiari malformation but rather a specific type of spina bifida called an encephalocervical meningocele.

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  • As with Type III malformation, many neurologists do not consider this a Chiari malformation but rather cerebellar hypoplasia (underdevelopment).

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  • The remainder of this entry only discusses Chiari malformation Types I and II.

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  • The true incidence of Chiari malformation is unknown.

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  • Most researchers agree that the rate of both Type I and Type II Chiari malformation is approximately 1 percent of all live births.

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  • As access to imaging testing such as MRI has increased, so has the number of children diagnosed with Chiari malformation Type I.

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  • Therefore, the incidence of known Type I Chiari malformation is anticipated to increase.

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  • Similarly, studies of families and identical twins with Chiari malformation show that the malformation occurs more often in these families than in families in which no member is affected.

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  • Another proposed cause for Chiari malformation is an abnormality in bone development.

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  • Symptoms of Chiari malformation vary according to the type of malformation.

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  • Symptoms of Type II Chiari malformation include those that occur in Type I malformation.

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  • In some children Chiari malformation is evident at birth, especially Type II malformation.

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  • This procedure is most helpful in assessing abnormalities of the skull and backbone associated with Chiari malformation.

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  • The prognosis for Chiari malformation varies depending on which type of malformation is present.

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  • Some patients may continue to experience neurological symptoms, but the long term prognosis for children with this type of Chiari malformation is excellent, including normal development and intellectual functioning.

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  • The full extent of problems associated with Chiari malformation may not be evident at birth, especially for children with Type I malformation.

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  • The first step for diagnosing Chiari malformation Type I is an accurate and detailed history and physical examination.

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  • The prognosis for children with Chiari malformation Type I is very good.

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  • When discussing Chiari malformation and surgery with their child, parents should use words the child can understand.

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