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54 Possible Causes for Wide Sylvian Fissures

  • Glutaric Aciduria

    CSF spaces and open Sylvian fissures.[pediatricneurosciences.com] Frontotemporal atrophy, subdural fluid collections, widened CSF spaces, particularly wide sylvian fissures, and dilated insular cisterns are frequently described on CT scan[vaccinetruth.org] Axial T2-weighted magnetic resonance imaging of the brain revealed bilateral frontotemporal atrophy with wide Sylvian fissure giving the “bat-wings” appearance [Figure 1][pediatricneurosciences.com]

  • Neu-Laxova Syndrome Type 2

    The colprocephaly and incomplete opercularization with wide shallow sylvian fissures were noted to produce a figure-of-8 appearance to the brain.[nature.com] Figure 1 ( a ) Coronal cranial sonogram at the level of the third ventricle demonstrating a figure-of-8 appearance of the brain with wide sylvian fissure and with no sulci[nature.com] There is a thickened cortex without gyri or sulci and a figure-of-8 appearance of the brain with a wide, shallow sylvian fissure (arrows). ( c ) Posterior coronal T2-weighed[nature.com]

  • Polyhydramnios

    Ultrafast fetal MRI performed at 34 weeks of gestation revealed agyria/pachygyria, a figure-eight appearance of the brain, a wide and shallow Sylvian fissure, enlarged subarachnoid[ncbi.nlm.nih.gov]

  • Miller Dieker Syndrome

    The colprocephaly and incomplete opercularization with wide shallow sylvian fissures were noted to produce a figure-of-8 appearance to the brain.[nature.com] Figure 1 ( a ) Coronal cranial sonogram at the level of the third ventricle demonstrating a figure-of-8 appearance of the brain with wide sylvian fissure and with no sulci[nature.com] There is a thickened cortex without gyri or sulci and a figure-of-8 appearance of the brain with a wide, shallow sylvian fissure (arrows). ( c ) Posterior coronal T2-weighed[nature.com]

  • Hypothalamic Hamartoma

    sylvian fissure dissection and reduce the working distance. [2] For pedunculated lesions, a basal approach would provide direct access to the lesion and limit damage to the[neurologyindia.com] […] less hypothalamic damage. [2] The incidence of cranial nerve damage and perforator injuries can be minimized by performing an orbito-zygomatic osteotomy as this would allow wide[neurologyindia.com]

  • Lissencephaly

    The colprocephaly and incomplete opercularization with wide shallow sylvian fissures were noted to produce a figure-of-8 appearance to the brain.[nature.com] Figure 1 ( a ) Coronal cranial sonogram at the level of the third ventricle demonstrating a figure-of-8 appearance of the brain with wide sylvian fissure and with no sulci[nature.com] There is a thickened cortex without gyri or sulci and a figure-of-8 appearance of the brain with a wide, shallow sylvian fissure (arrows). ( c ) Posterior coronal T2-weighed[nature.com]

  • Warburg Sjo Fledelius Syndrome

    Analysis of the brain magnetic resonance imagings (MRIs) revealed a consistent pattern of polymicrogyria in the frontal and parietal lobes, wide sylvian fissures, a thin hypoplastic[ncbi.nlm.nih.gov] A polymicrogiric gyration of both frontal lobes was associated, extending to the opercular cortex of a wide sylvian fissure and to the parietal lobes, in particular on the[omicsonline.org]

  • Warburg Micro Syndrome 3

    A polymicrogiric gyration of both frontal lobes was associated, extending to the opercular cortex of a wide sylvian fissure and to the parietal lobes, in particular on the[omicsonline.org]

  • Carotid Artery Aneurysm

    Intraoperative Management • 20% mannitol 0.5 mg/kg after skin incision • Brain retractors : used only after wide splitting of the sylvian fissure • Dexamethasone : no supporting[slideshare.net] […] splitting of the sylvian fissure • Excessive temporal lobe retraction is avoided – it may rip the dome of the aneurysm, which frequently adheres to the mesial temporal lobe[slideshare.net] Operative Technique • Hydrocephalus – Catheter pass to frontal horn of lateral ventricle – 2.5 cm above the base of the frontal lobe and 2.5 cm anterior to the sylvian fissure[slideshare.net]

  • Internal Carotid Artery Aneurysm

    Intraoperative Management • 20% mannitol 0.5 mg/kg after skin incision • Brain retractors : used only after wide splitting of the sylvian fissure • Dexamethasone : no supporting[slideshare.net] Most aneurysms of regular or large size can be operated on without opening the sylvian fissure or mobilizing the temporal lobe; in fact, wide opening of the sylvian fissure[neupsykey.com] […] splitting of the sylvian fissure • Excessive temporal lobe retraction is avoided – it may rip the dome of the aneurysm, which frequently adheres to the mesial temporal lobe[slideshare.net]

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