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33 Possible Causes for Wide Sylvian Fissures

  • 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]

  • 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]

  • 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]

  • 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.[doi.org] 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[doi.org] 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[doi.org]

  • Organic Aciduria

    Whether these wide CSF spaces represent arachnoid cysts rather than atrophy and under-opercularisation of the Sylvian fissures, remains unresolved.[radiopaedia.org] fissures.[radiopaedia.org] Common features in both groups of patients are macrocephaly, expansion of subarachnoid convexity spaces, and wide CSF spaces anterior to the temporal poles and in the Sylvian[radiopaedia.org]

  • Worster-Drought Syndrome

    MRI findings include encephalomalacic changes, polymicrogyria, and FLAIR/T2 hyperintensity in bilateral perisylvian regions with a wide sylvian fissure and dysplastic and[ajnr.org] The sylvian fissures are wide and underdeveloped.[ijri.org] Sagittal Images may show posterior extension of the sylvian fissure, exposure of the insula and apparent thickening of the cortex.[ijri.org]

  • Arachnoid Cyst

    Sylvian fissure and cortical arachnoid cysts has superior success rates to neuroendoscopic procedures.[medlink.com] Minimally invasive neuroendoscopic techniques are being more widely practiced where there is hydrocephalus or suprasellar cysts, but resection and marsupialization for large[medlink.com]

  • Glutaric Aciduria

    Frontotemporal atrophy, subdural fluid collections, widened CSF spaces, particularly wide sylvian fissures, and dilated insular cisterns are frequently described on CT scan[vaccinetruth.org] Whether these wide CSF spaces represent arachnoid cysts rather than atrophy and under-opercularisation of the Sylvian fissures, remains unresolved.[radiopaedia.org] fissures.[radiopaedia.org]

  • Cortical Blindness

    The cleft may be bilateral or unilateral, with the Sylvian fissure being a common location.[unboundmedicine.com] Subdivided into open and closed lip, with the former having a wide separation of the cleft wall and the latter having the cleft walls touching.[unboundmedicine.com]

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