Arnold-Chiari malformation

(redirected from Chiari malformation)
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Ar·nold-Chi·a·ri mal·for·ma·tion

(ar'nŏld kē-ah'rē), [MIM*207950]
malformed posterior fossa structures associated with caudad traction and displacement of the rhombencephalon as caused by tethering of the spinal cord; may be accompanied in some cases by spina bifida and associated anomalies such as meningomyelocele; usually multifactorial in inheritance.

Arnold-Chiari malformation

[är′nəldkē·är′ē]
Etymology: Julius Arnold, German pathologist, 1835-1915; Hans Chiari, French pathologist, 1851-1916
a congenital herniation of the brainstem and lower cerebellum through the foramen magnum into the cervical vertebral canal. It is often associated with meningocele and spina bifida. See also neural tube defect.
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Arnold-Chiari malformation

Arnold-Chiari malformation

A congenital compression deformity of the lower brain, which is characterised by herniation of the cerebellar tonsils and distal medulla oblongata through the foramen magnum into the spinal canal. The Arnold-Chiari malformation is accompanied by compression of the 4th ventricle and firm adhesions at the cisterna magna.

Arnold-Chiari malformation

Neurology A congenital compression deformity of the 'lower brain' characterized by herniation of the cerebellar tonsils and distal medulla oblongata through the foramen magnum into the spinal canal; ACM is accompanied by compression of the 4th ventricle and firm adhesions at the cisterna magna

Ar·nold-Chi·a·ri mal·for·ma·tion

(ahr'nŏld kē-ah'rē mal'fōr-mā'shŭn)
Deformity of posterior cranial fossa structures caused by tethering of the spinal cord with caudad traction and displacement of the rhombencephalon; may be accompanied by spina bifida and associated anomalies such as meningomyelocele; weak evidence of autosomal recessive inheritance.

Arnold,

Julius, German pathologist, 1835-1915.
Arnold bodies - small portions or minute fragments of erythrocytes.
Arnold-Chiari deformity - Synonym(s): Arnold-Chiari malformation
Arnold-Chiari malformation - malformed posterior fossa structures. Synonym(s): Arnold-Chiari deformity; Arnold-Chiari syndrome; cerebellomedullary malformation syndrome
Arnold-Chiari syndrome - Synonym(s): Arnold-Chiari malformation

Chiari,

Hans, German pathologist, 1851-1916.
Arnold-Chiari deformity - Synonym(s): Arnold-Chiari malformation
Arnold-Chiari malformation - see under Arnold, Julius
Arnold-Chiari syndrome - Synonym(s): Arnold-Chiari malformation
Budd-Chiari syndrome - Synonym(s): Chiari syndrome
Chiari disease - Synonym(s): Chiari syndrome
Chiari net - abnormal fibrous or lacelike strands in the right atrium.
Chiari syndrome - thrombosis of the hepatic vein with great enlargement of the liver and extensive development of collateral vessels, intractable ascites, and severe portal hypertension. Synonym(s): Budd-Chiari syndrome; Budd syndrome; Chiari-Budd syndrome; Chiari disease; Rokitansky disease (2)
Chiari-Budd syndrome - Synonym(s): Chiari syndrome
Chiari II syndrome - elongation of medulla and cerebellar tonsils and vermis with displacement through the foramen magnum into the upper spinal canal.

Arnold-Chiari malformation

a congenital anomaly in which the cerebellum and medulla oblongata protrude down into the cervical spinal canal through the foramen magnum; it is almost always associated with meningomyelocele, spina bifida and hydrocephalus. Recorded in calves, sheep and dogs.
References in periodicals archive ?
MRI findings of our case confirmed the existence of Chiari malformation and syringomyelia.
As discussed above, we cannot help but link up foramen magnum position with the anatomic basis of an increased risk of chiari malformation in humans.
8, 16) In addition, previous studies suggest that syringomyelia, scoliosis and Chiari malformations tend to present concurrently.
The Chiari malformation was described on postmortem examination in 1891 by the German pathologist Dr.
This condition is usually caused by spinal-cord trauma, tumors of the spinal cord or birth defects, notably Chiari malformation.
When part of the cerebellum is located below the foramen magnum, it is called a Chiari malformation.
It showed that the pixieish boy with the impish grin has Chiari malformation, a complicated congenital condition caused by abnormalities in development of parts of the brain - the stem and the cerebellum - and the upper portion of the spinal column.
Holmes, who had qualified, withdrew from the playoffs to undergo brain surgery yesterday for a Chiari malformation, a non-life-threatening condition that causes dizziness, headaches and imbalance.
Darren Norton, from Great Barr, fears more people in Britain could be suffering Chiari Malformation (CM).
Evaluation and management of the Chiari malformation type 1 for the primary care physician.
Chiari malformation presenting in adults: a surgical experience in 127 cases.