cisterna magna


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Related to cisterna magna: arachnoid cyst

cisterna

 [sis-ter´nah] (pl. cister´nae) (L.)
cisterna cerebellomedulla´ris poste´rior the enlarged subarachnoid space between the undersurface of the cerebellum and the posterior surface of the medulla oblongata; called also cisterna magna.
cisterna chy´li the dilated portion of the thoracic duct at its origin in the lumbar region; called also receptaculum chyli.

cisterna magna

The cranial subarachnoid space between the medulla and the cerebellum; the foramina of the fourth ventricle open into it. Cerebrospinal fluid flows from it into the spinal subarachnoid space.
See also: cisterna

cisterna

pl. cisternae; cistern.

cisterna cerebellomedullaris, cisterna magna
the enlarged subarachnoid space between the caudal surface of the cerebellum and the dorsal surface of the medulla oblongata.
cisterna chyli
the dilated portion of the thoracic duct at its origin in the lumbar region. Called also receptaculum chyli.
cisterna magna
see cisterna cerebellomedullaris (above).
References in periodicals archive ?
Keywords: Head ultrasound, Mega cisterna magna, MRI brain.
A mega-cisterna magna (MCM) is defined as a dilated cisterna magna whereas fourth ventricle, cerebellar hemispheres and vermis are normal1.
An enlarged cisterna magna has been associated with chromosomal abnormalities such as trisomy 13 and 184.
When stratified by gender, male fetuses characteristically have higher frequency of isolated MCM compared to female fetuses and the mean measurements of the cisterna magna appear to be larger for males8.
Isolated MCM###Slightly prominent cisterna magna###Mega cisterna magna with
Using an integral automatic centimeter ruler, the following measures were taken: The distance from skin to the posterior wall of cisterna magna and the depth of the cisterna magna, from the inner line of the posterior wall of cisterna magna to gracile tubercle.
The distances from the skin to the posterior wall of cisterna magna are summarized in [Table 3].
The best correlation was found between the distance from the skin to the cisterna magna and gender according to the standardized coefficients.
The cisterna magna occupies a large space in the brain where CSF can be collected, or medication administered for intrathecal infusion; [sup][1],[2] however, the distance from skin to the cistern and depth of cisterna magna varies by gender, weight and age.
Mega cistern Magna: Mega cisterna magna represents the mildest end of Dandy Walker spectrum.
Mega cisterna magna consists of enlarged posterior fossa secondary to an enlarged cisterna magna with normal cerebellar vermis and fourth ventricle.
Dandy-Walker malformation consists of cystic dilatation of the 4th ventricle, complete or partial agenesis of the cerebellar vermis and an enlarged posterior fossa, Dandy-Walker variant consists of cystic posterior fossa mass with variable inferior hypoplasia of the cerebellar vermis with no enlargement of the posterior fossa and Megacisterna magna is enlarged cisterna magna with normal cerebellar vermis and fourth ventricle.