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47 Possible Causes for Cisterna Magna Absent

  • 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]

  • Syringomyelia

    The reason for this large opening is to increase both of the posterior fossa and the cisterna magna, commonly absent in cases of hindbrain herniation, permitting, in this[scielo.br]

  • Tumor of Meninges

    This MRI characterizes the posterior fossa meningioma to be within the cisterna magna, exerting mass effect with superior displacement of the cerebellum.[emedicine.com] MRS features include elevated choline and relatively absent NAA. Diffusion-weighted MRI has been evaluated with varying conclusions.[emedicine.com]

  • Meningioma

    This MRI characterizes the posterior fossa meningioma to be within the cisterna magna, exerting mass effect with superior displacement of the cerebellum.[emedicine.com] MRS features include elevated choline and relatively absent NAA. Diffusion-weighted MRI has been evaluated with varying conclusions.[emedicine.com]

  • Meningomyelocele

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

  • Central Nervous System Cyst

    These abnormalities are secondary to the Arnold-Chiari malformation and include frontal bone scalloping (lemon sign), and obliteration of the cisterna magna with either an[sonoworld.com] "absent" cerebellum or abnormal anterior curvature of the cerebellar hemispheres (banana sign).[sonoworld.com]

  • 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]

  • 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]

  • Acquired Porencephaly

    magna that communicates that communicates w/ fourth ventricle w/normal or hypoplastic cerebellar vermis hydrocephalus is usually absent UA: large posterior fossa cyst that[quizlet.com] 13, 18, and 21, heterotopias, GI and GU anomalies, cardiac anomalies, congenital diaphragmatic hernia, and cystic hygromas milder abnormality of posterior fossa enlarged cisterna[quizlet.com]

  • Craniosynostosis Type 3

    […] corpus callosum Posterior fossa cyst Enlarged cisterna magna – – – – – – – – – – – – – – – – – – – – – – – – – Face/neck Facial cleft Micrognathia Nuchal edema Cystic hygromata[sonoworld.com] […] defects Trisomy 21 Trisomy 18 Trisomy 13 Triploidy Turner Skull/brain Strawberry-shaped head Brachycephaly Microcephaly Ventriculomegaly Holoprosencephaly Choroid plexus cysts Absent[sonoworld.com]

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