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45 Possible Causes for Cisterna Magna Absent

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  • Obstructive Hydrocephalus

    magna were absent.[ncbi.nlm.nih.gov] […] dilatation of the central canal from the cerebrospinal junction toward the thoracic level with communication to the fourth ventricle, whereas Chiari malformation and tight cisterna[ncbi.nlm.nih.gov]

  • Microcephaly

    magna (all absent in those without microcephaly), and polymicrogyria (the only malformation present without microcephaly).[ncbi.nlm.nih.gov] […] calcifications outside the cortico-subcortical junctions, corpus callosum abnormalities, moderate-to-severe ventriculomegaly, an enlarged extra-axial space, an enlarged cisterna[ncbi.nlm.nih.gov]

  • Bilateral Temporo-Occipital Polymicrogyria

    magna Absent Usually normal Usually normal Normal Normal or Widened High-lying in 12% cases Dilated Persisting Blake’s pouch Tetraventricular Usually normal Deformed Dilated[mrineonatalbrain.com] magna, and absent cor-pus callosum.[documents.tips] Absent speech Rod-cone dystrophy Minimal change glomerulonephritis Abnormality of the head Focal segmental glomerulosclerosis Glomerulosclerosis Narrow forehead Dysmetria[mendelian.co]

  • Cataract - Congenital Heart Disease - Neural Tube Defect Syndrome

    The characteristic findings with a Dandy-Walker malformation (Fig. 1) consists of an enlarged cisterna magna, an absent cerebellar vermis, and superior displacement of the[iame.com] Dandy-Walker Complex Introduction The Dandy-Walker complex consists of the classic Dandy-Walker malformation (DWM), Dandy-Walker variants, and a mega cisterna magna.[iame.com]

  • Complex Cortical Dysplasia with other Brain Malformations 2

    magna Absent Usually normal Usually normal Normal Normal or Widened High-lying in 12% cases Dilated Persisting Blake’s pouch Tetraventricular Usually normal Deformed Dilated[mrineonatalbrain.com] […] agenesis Hypoplastic Dilated, cystic Widened High-lying Virtual Dandy–Walker variant Uncommon Rotated, partial or total agenesis Hypoplastic Normal Normal Normal Variable Mega cisterna[mrineonatalbrain.com]

  • Cortical Dysplasia Complex with other Brain Malformations 3

    magna Absent Usually normal Usually normal Normal Normal or Widened High-lying in 12% cases Dilated Persisting Blake’s pouch Tetraventricular Usually normal Deformed Dilated[mrineonatalbrain.com] […] agenesis Hypoplastic Dilated, cystic Widened High-lying Virtual Dandy–Walker variant Uncommon Rotated, partial or total agenesis Hypoplastic Normal Normal Normal Variable Mega cisterna[mrineonatalbrain.com]

  • Meningomyelocele

    On ultrasound a “banana sign” is produced by the abnormal shape of the cerebellum combined with an absent cisterna magna.[openanesthesia.org]

  • Arnold-Chiari Malformation Type 2

    On ultrasound a “banana sign” is produced by the abnormal shape of the cerebellum combined with an absent cisterna magna.[openanesthesia.org] Descriptors in the literature ranging from" effacement of the fetal cisterna magna" [9] to the banana-shaped cerebellum [13] to the absent cerebellum [14] have implied a continuum[medresearch.in]

  • Mega-Cisterna Magna

    Mega cisterna magna and arachnoid cysts show CSF characteristics on T1-weighted, T2-weighted, DWI, and FLAIR sequences.[omicsonline.org] Pathogenesis: Ventriculomegaly Lee Lateral Ventricle Right Lateral Ventricle Foramen of Monro Aqueduct of Sylvius 4th Ventricle 3rd Ventricle Cisterna Magna 35 Sunday, July[slideshare.net] (intact cerebellum and vermis), but it may be associated with Dandy-Walker syndrome, either full blown or a variant in which the vermis is either completely or partially absent[omicsonline.org]

  • Uveal Coloboma - Cleft Lip and Cleft Palate - Intellectual Disability

    Mega cisterna magna, hypoplastic pons, and cerebellar vermis were compatible with posterior cranial fossa malformation ( Fig 3 ).[hkmj.org] (a) T1-weighted sagittal and (b) axial magnetic resonance imaging of brain show mega cisterna magna, hypoplastic pons, and cerebellar vermis compatible with posterior cranial[hkmj.org] T1-weighted axial magnetic resonance imaging of brain shows pachygyria, hydrocephalus, absent septum pellucidum, and hypoplasia of corpus callosum forming type II lissencephaly[hkmj.org]

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