2017-01-10
The presence of mega cisterna magna has been associated with different central nervous system malformations. A cisterna magna > 10 mm in size between 21 and 28 postmenstrual weeks15 can suggest more complex abnormalities16. There is a large variability in the size of the pathological cisterna magna in the last weeks of gestation17.
According to the literature, our patient is the first horseshoe kidney case that had mega cisterna magna, arachnodactyly, and mild mental retardation. Case Report. A 9-year-old boy admitted because of the myoclonic jerks. He had a dysmorphic face, low-set and cup-shaped ears The posterior fossa anomalies analyzed were Dandy-Walker malformation (DWM), mega cisterna magna (MCM), Blake's pouch cyst (BPC) and vermian hypoplasia (VH).
Mega cisterna magna is a condition in which the cisterna magna, the subarachnoid cistern below the fourth ventricle, is enlarged. It has been proposed to be due to a delayed rupture of Blake's pouch rather than a failed rupture. In mega cisterna magna, unlike in DWM: The cerebellum is not usually hypoplastic. A mega-cisterna magna, is a controversial entity among experts.
Vi kan ta prov från ryggmärgsväskan via cisterna magna eller mellan två lumbalkotor (lumbal punktion) vilket kan hjälpa oss i diagnostiken av framförallt inflammatoriska sjukdomar. Inne i hjärnan finns något som kallas för blod-hjärnbarriären.
Fig. 10 : Enlarged CSF space in both sides of falx, a prominent left parasagittal enlargement causing scalloping in adjacent bone, but no mass effect can be seen, as both cerebellar convexities are undisturbed (C). " Mega-cisterna magna group (vermis seen on axial images).
A mega-cisterna magna, is a controversial entity among experts. In general however, the term is applied to non-pathological prominance (usually exceeding 10 mm in antenatal imaging) of the retro-cerebellar CSF space and not associated with cerebellar abnormalities. There is a normal vermis and normal cerebellar hemispheres.
Basic Training Key Take Home Points • Head is imaged in three planes – Lateral ventricular plane , Trans thalamic plane & Trans cerebellar plane • It is important to identify the specific landmarks The presence of mega cisterna magna has been associated with different central nervous system malformations.
88 This is essentially a diagnosis of exclusion and care must be taken to ensure that the cisterna magna has been properly measured, as this diagnosis
mega cisterna magna. We present here two cases of mega cisterna magna associated with mania and catatonic schizophrenia. Per our knowledge, this is the first re-port of mega cisterna magna associated with catatonic schizophrenia.
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Svensk definition. Hålrummet mellan spindelvävshinnan och den mjuka hjärnhinnan, fyllt med ryggmärgsvätska. Det innehåller stora blodkärl som förser hjärnan och ryggmärgen med blod. Engelsk definition. The space between the arachnoid membrane and PIA MATER, filled with CEREBROSPINAL FLUID.
A cisterna magna > 10 mm in size between 21 and 28 postmenstrual weeks15 can suggest more complex abnormalities16. There is a large variability in the size of the pathological cisterna magna in the last weeks of gestation17. Mega cisterna magna is a part of “DaWalker Complex” and it is characterized by the enlargement of the ndy-cisterna magna, morphologically intact vermis and cerebellar hemispheres [3]. 2. Case Presentation Our patient is male and 13 years old, his past history was uneventful, as his peripartum period and milestone Mega cisterna magna (MCM) is described as an enlarged cisterna magna with a normal fourth ventricle and cerebellar hemispheres .