Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele

Background: Neurofibromatosis 1 (NF1) is autosomally inherited disorder, characterized by café au lait spots and multiple neurofibromas. Subventricular glial nodules (SVGN) are multiple gliosis bulging into the ventricular lumen, and histologically consist of astrocytes and their processes. Damage t...

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Main Authors: Tadanori Hamano, Tatsuro Mutoh, Hironobu Naiki, Norimichi Shirafuji, Masamichi Ikawa, Osamu Yamamura, Dennis W. Dickson, Shichiryoemon Aiki, Masaru Kuriyama, Yasunari Nakamoto
Format: Article
Language:English
Published: Elsevier 2019-12-01
Series:eNeurologicalSci
Online Access:http://www.sciencedirect.com/science/article/pii/S2405650219300371
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author Tadanori Hamano
Tatsuro Mutoh
Hironobu Naiki
Norimichi Shirafuji
Masamichi Ikawa
Osamu Yamamura
Dennis W. Dickson
Shichiryoemon Aiki
Masaru Kuriyama
Yasunari Nakamoto
author_facet Tadanori Hamano
Tatsuro Mutoh
Hironobu Naiki
Norimichi Shirafuji
Masamichi Ikawa
Osamu Yamamura
Dennis W. Dickson
Shichiryoemon Aiki
Masaru Kuriyama
Yasunari Nakamoto
author_sort Tadanori Hamano
collection DOAJ
description Background: Neurofibromatosis 1 (NF1) is autosomally inherited disorder, characterized by café au lait spots and multiple neurofibromas. Subventricular glial nodules (SVGN) are multiple gliosis bulging into the ventricular lumen, and histologically consist of astrocytes and their processes. Damage to ependymal cells induces SVGN formation. Case report: This case report describes a 50-year-old man with NF1, craniofacial dysmorphism, including sphenoid dysplasia, bone defects at the middle posterior fossa, with disconnection of the parieto-occipital sutures, and the left orbital bone, and occipital meningoencephalocele. He died of status epileptics. Pathologically, many SVGN were found around the ventricular wall. Many ependymal cells were stripped during ventricular dilatation. Therefore, to prevent brain tissue insult from direct exposure to CSF, the proliferation of astrocytes and their processes was speculated to have substitute for ependymal cells and induced SVGN formation. Keywords: Neurofibromatosis 1, Subventricular glial nodule, Meningoencephalocele, Craniofacial dysmorphism
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spelling doaj.art-4178bb75d8524d1488d46a4b8cc0b7892022-12-22T03:39:34ZengElseviereNeurologicalSci2405-65022019-12-0117Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephaloceleTadanori Hamano0Tatsuro Mutoh1Hironobu Naiki2Norimichi Shirafuji3Masamichi Ikawa4Osamu Yamamura5Dennis W. Dickson6Shichiryoemon Aiki7Masaru Kuriyama8Yasunari Nakamoto9Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan; Department of Aging and Dementia (DAD), Faculty of Medical Sciences, University of Fukui, Fukui, Japan; Life Science Innovation Center, Faculty of Medical Sciences, University of Fukui, Fukui, Japan; Corresponding author at: Second Department of Internal Medicine, Division of Neurology, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan.Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan; Department of Neurology, Fujita Health University, Toyoake, JapanDepartment of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui, JapanSecond Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan; Department of Aging and Dementia (DAD), Faculty of Medical Sciences, University of Fukui, Fukui, JapanSecond Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, JapanSecond Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, JapanDepartment of Neuropathology, Mayo Clinic College of Medicine, FL, USADepartment of Internal Medicine, Aiki Hospital, Echizen-city, JapanSecond Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan; Department of Neurology, Ota Memorial Hospital, Fukuyama, JapanSecond Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, JapanBackground: Neurofibromatosis 1 (NF1) is autosomally inherited disorder, characterized by café au lait spots and multiple neurofibromas. Subventricular glial nodules (SVGN) are multiple gliosis bulging into the ventricular lumen, and histologically consist of astrocytes and their processes. Damage to ependymal cells induces SVGN formation. Case report: This case report describes a 50-year-old man with NF1, craniofacial dysmorphism, including sphenoid dysplasia, bone defects at the middle posterior fossa, with disconnection of the parieto-occipital sutures, and the left orbital bone, and occipital meningoencephalocele. He died of status epileptics. Pathologically, many SVGN were found around the ventricular wall. Many ependymal cells were stripped during ventricular dilatation. Therefore, to prevent brain tissue insult from direct exposure to CSF, the proliferation of astrocytes and their processes was speculated to have substitute for ependymal cells and induced SVGN formation. Keywords: Neurofibromatosis 1, Subventricular glial nodule, Meningoencephalocele, Craniofacial dysmorphismhttp://www.sciencedirect.com/science/article/pii/S2405650219300371
spellingShingle Tadanori Hamano
Tatsuro Mutoh
Hironobu Naiki
Norimichi Shirafuji
Masamichi Ikawa
Osamu Yamamura
Dennis W. Dickson
Shichiryoemon Aiki
Masaru Kuriyama
Yasunari Nakamoto
Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
eNeurologicalSci
title Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
title_full Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
title_fullStr Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
title_full_unstemmed Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
title_short Subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
title_sort subventricular glial nodules in neurofibromatosis 1 with craniofacial dysmorphism and occipital meningoencephalocele
url http://www.sciencedirect.com/science/article/pii/S2405650219300371
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