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13 Possible Causes for Agenesis of the Rostrum of Corpus Callosum

  • Occipital Lobe Tumor

    The rostrum is the part of the corpus callosum that projects posteriorly and inferiorly from the anteriormost genu.[courses.lumenlearning.com] Agenesis of the corpus callosum (ACC) is a rare congenital disorder in which the corpus callosum is partially or completely absent.[courses.lumenlearning.com] The rostrum is so named for its resemblance to a bird’s beak.[courses.lumenlearning.com]

  • Spina Bifida

    Studies of the corpus callosum have shown complex patterns of agenesis or hypoplasia along its rostral-caudal axis, with rostrum and splenium regions particularly susceptible[ncbi.nlm.nih.gov] Studies of the corpus callosum have shown complex patterns of agenesis or hypoplasia along its rostral‐caudal axis, with rostrum and splenium regions particularly susceptible[doi.org]

  • Vertical Heterotropia

    The presence of the rostrum essentially excludes primary agenesis.[radiopaedia.org] In secondary dysgenesis parts of the corpus callosum which form before the insult will be present whereas later parts will be absent.[radiopaedia.org] One apparent exception to this rule is holoprosencephaly in which it is the anterior parts of the corpus callosum which are absent 7.[radiopaedia.org]

  • Encephalocele

    In partial agenesis of corpus callosum, the splenium and rostrum are absent. Intracranial lipomas represent rare development malformations of the nervous system.[ijri.org] In sagittal MR studies, corpus callosum, cingulate gyrus and sulcus are not seen.[ijri.org]

  • Basal Encephalocele

    […] of the rostrum of the corpus callosum, and a right retinal coloboma.[elsevier.es] 3D reconstruction and MRI of the brain ( Fig. 1 ) showed transsphenoidal meningoencephalocystocele, containing dysplastic hypothalamic-pituitary tissue in its lower part, agenesis[elsevier.es]

  • Partial Agenesis of the Corpus Callosum

    Cerebral MRI revealed a partial agenesis of the corpus callosum with a complete absence of the rostrum, hypoplastic anterior and inferior genu, and a hypoplastic splenium.[ncbi.nlm.nih.gov] The body and splenium of the corpus callosum are well formed, whereas the genu and rostrum are hypoplastic. Corpus callosum, agenesis.[emedicine.medscape.com] The brain MRI in our patient showed a partial agenesis of the corpus callosum (p-ACC) characterized by the absence of the splenium and rostrum of this structure.[kundoc.com]

  • X-Linked Partial Corpus callosum Dysgenesis

    Agenesis of the corpus callosum was first described in 1934 by Davidoff and Dyke.[fetalsono.com] Corpus callosum, agenesis. Sagittal T1-weighted MRI of the brain shows partial agenesis of the corpus callosum.[keralamedicaljournal.com] . • Developmental absence of the corpus callosum: Agenesis (ACC) • Partial ACC • Complete ACC • Each of these may be: • Isolated: ACC with no other abnormalities • Complex[slideshare.net]

  • Neuronal Migration Defect

    Agenesis of the Corpus Callosum May be: • Complete • Partial ) splenium and rostrum always missing) 8.[slideshare.net] Agenesis of the Corpus Callosum  ventricles – ventricles run parallel rather than the normal "bow-tie" configuration giving a racing car appearance on axial imaging – colpocephaly[slideshare.net]

  • Complex Cortical Dysplasia with other Brain Malformations 2

    In complete callosal agenesis, the entire corpus callosum as well as the cingulated gyrus and sulcus are absent [Figure 4] .[jdrntruhs.org] The rostrum, however, forms after the splenium, between 18 and 20 weeks of gestational age ( Fig. 30.1 ). 2 Partial or complete malformation (agenesis) of the corpus callosum[radiologykey.com] Figure 4: Corpus callosum agenesis: Computed tomography sag view: Complete absence of corpus callosum with sunburst configuration Click here to view White matter axons which[jdrntruhs.org]

  • Cortical Dysplasia Complex with other Brain Malformations 3

    In complete callosal agenesis, the entire corpus callosum as well as the cingulated gyrus and sulcus are absent [Figure 4].[jdrntruhs.org] Figure 4: Corpus callosum agenesis: Computed tomography sag view: Complete absence of corpus callosum with sunburst configuration Click here to view White matter axons which[jdrntruhs.org] Callosal agenesis can be complete or partial. When partial, the splenium and rostrum are always missing.[jdrntruhs.org]

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