Optic nerve sheath meningocele, also called dural ectasia of the optic nerve, is a benign dilation of the optic nerve sheath. We report two interesting cases of primary optic nerve sheath meningocele. Etiology, clinical features, and management options are discussed Optic nerve sheath meningocele Clin Ophthalmol. 2008 Sep;2(3):661-8. doi: 10.2147/opth.s2689. Authors Juan Carlos Mesa-Gutiérrez 1 , Silvia Muñoz Quiñones, Jorge Arruga Ginebreda. Affiliation 1 Department of Ophthalmology. Optic nerve sheath meningoceles. Clinical and radiographic features in 13 cases with a review of the literature The authors propose the term meningocele for this condition and suggest MRI with fat-suppression techniques and off-axis sagittal views as the radiographic procedure of choice. Publication types Case Reports.
In summary, optic nerve sheath meningocele refers to dilatation of the optic nerve sheath, which can have varying presentation. Optic nerve dysfunction can be seen, and it can range in severity from subtle involvement to a progressive vision loss. The diagnosis is usually made with MRI of the orbits Surgically verified case of optic sheath nerve meningocele: case report with review of the literature. Lunardi P, Farah JO, Ruggeri A, Nardacci B, Ferrante L, Puzzilli F. Lunardi P, et al. Neurosurg Rev. 1997;20(3):201-5. doi: 10.1007/BF01105565 Optic Nerve Sheath Meningocele Simulating an Optic Nerve Pit. Optic Nerve Sheath Meningocele Simulating an Optic Nerve Pit Ophthalmic Plast Reconstr Surg. Jul/Aug 2018;34(4):e138. doi: 10.1097/IOP.0000000000000963. Authors Sara E Lally. We propose the term ditions.l-' The increased resolution of late-generation meningocele to describe this condition, characterized by computed tomography (CT) and magnetic resonance imdilation of the optic nerve sheath and expansion of the aging (MRI) with high field strength magnets and surface cerebrospinal fluid (CSF)-filled space around the optic coils can generally help determine whether the nerve or nerve. the sheath, or both, are enlarged General physical examination and cerebrospinal fluid analysis were normal. The subject was diagnosed as having dural ectasia of the optic nerve sheath and followed a course of acetazolamide 250 mg twice daily for three months, and displayed good anatomical and functional results during a 2-year follow-up period
Optic nerve sheath dilatation or meningocele is a rare condition describing an 'enlargement and dilation of primarily the optic nerve sheath'. 1 There is an expansion of the cerebrospinal fluid.. A diagnosis of optic nerve sheath meningocele with secondary bulging into the globe was made based on enhanced depth imaging-optical coherence tomography and radiographic imaging studies. The patient is being followed conservatively with serial examinations. FIG. 2.
Optic nerve sheath meningocele is a primary enlargement of the optic nerve sheath. Optic nerve sheath meningocele can present with progressive hyperopia and choroidal folds in middle-aged males 1. Eye (Lond). 2002 Nov;16(6):800-2. Bilateral idopathic optic nerve sheath meningocele associated with unilateral transient cystoid macular oedema . The authors describe a patient with choroidal melanoma, whose unrecognized optic nerve meningocele simulated massive extraocular extension on ultrasonography, later clarified as meningocele on magnetic resonance imaging. Source
Meningocele is a primary cerebrospinal ﬂ uid (CSF) cyst of the optic nerve sheath. Presenting symptoms are often related to involvement of the optic nerve, with a slow or rapid decrease in visual acuity The most reasonable explanation for the development of the optic nerve sheath meningoceles comes from Hayreh's studies who investigated the relationship of the optic nerve sheath to the optic nerve and stated that congenital narrowing of the optic or congenital cranio-orbital junction anomalies could cause optic nerve sheath meningocele. 1 DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals Purpose: There is no consensus as to the optimum treatment for traumatic optic neuropathy (TON). The decision to intervene medically or surgically, or simply observe was recommended to be on an individual basis. The purpose of this study is to test whether optic nerve sheath fenestration (ONSF) could improve vision in patients with traumatic optic nerve sheath meningocele, although it was.
Isolated optic nerve sheath meningocele is a rare affection defined as the cystic enlargement of the optic nerve sheath filled with cerebrospinal fluid. We report the case of a 39-year-old woman presenting with bilateral meningocele uncovered during a routine examination for headache complaints Improvement occurred after optic nerve sheath fenestration. Visual loss due to optic nerve meningocele can occur in the Hadju-Cheney syndrome. Optic nerve sheath fenestration can result in visual improvement. It is unclear whether the occurrence of optic nerve meningocele is causally or fortuitously related to the Hadju-Cheney syndrome. PMID. Specifically, optic nerve sheath meningocele is a dilation of the optic nerve sheath, and expansion of the subarachnoid or subdural cerebrospinal fluid (CSF)-filled space around the optic nerve. An arachnoid cyst is a benign proliferation of normal fibrovascular tissue of the leptomeninges around the optic nerve
Optic Nerve Sheath Meningoceles: Thirteen patients with dilated intraorbital optic nerve sheaths with an expanded, patulous cerebrospinal fluid (CSF) space were studied with highresolution computed tomography (CT) or magnetic resonance imaging (MRI). visual acuity improved in one. The authors propose the term meningocele for this. Optic nerve sheath meningocele Musleh Algarni,1,2 Pejman J Maralani,3 Arun NE Sundaram1 1Department of Ophthalmology and Vision Sciences, Sunnybrook Health Sciences Center, University of Toronto, Toronto, ON, Canada; 2Department of Medicine, Al Thagher General Hospital, Jeddah, Saudi Arabia; 3Department of Medical Imaging, Sunnybrook Health Sciences Center, University of Toronto, Toronto, ON. Optic nerve sheath meningocele is a benign dilatation of the optic nerve sheath that can simulate orbital tumor or extraocular extension of intraocular tumor. Magnetic resonance imaging can reliably differentiate these conditions. Full text links . Read article at publisher's site. Also known as optic nerve sheath meningocele, this lesion merits differentiation from the common optic nerve pathologies in NF‑1 such as glioma and meningioma. Magnetic resonance imaging(MRI) is an excellent tool to accurately detect, delineate, an mmation or neoplasm, suggestive of bilateral optic nerve meningocele. An optic nerve sheath fenestration was performed OD, and he experienced an improvement and stabilization of vision in his right eye during a 1-year follow-up period. The authors recommend that surgical decompression, particularly optic nerve sheath fenestration, should be considered in cases with progressive vision loss due.
Optic Nerve Sheath Meningiomas (ONSM) are uncommon, benign neoplasms originating from the meningothelial cells of the meninges surrounding the optic nerve. The tumor may arise from either the intraorbital or intracanalicular portions of the optic nerve where there is a meningeal sheath. Primary ONSM should be differentiated from secondary intracranial meningiomas that extend anteriorly to. . Dural ectasia of the optic nerve also known as optic nerve meningocele is a rare manifestation of optic nerve involvement in NF-1. Magnetic resonance imaging (MRI) is an excellent modality to accurately identify, characterize, delineate.
Meningocele is a s accular dilation of the optic nerve sheath. Optic sheath meningocele is rare, with approximately 30 cases described in the literature. 33 The term should be used to describe primary CSF cysts of the optical nerve sheath without apical mass or malformation of the cranial orbital junction If the address matches an existing account you will receive an email with instructions to retrieve your usernam We are not allowed to display external PDFs yet. You will be redirected to the full text document in the repository in a few seconds, if not click here.click here
Keywords: Traumatic optic neuropathy, optic nerve sheath meningocele, optic nerve sheath fenestration (ONSF), head/orbital pain bare sclera. The medial rectus muscle is isolated with a muscle hook, and tagged with 6-0 Vicryl suture, then muscle is disinserted. Hemostasis is performed with needle-point cautery The ana- tomy of the optic nerve/optic nerve sheath complex in the region of the optic canal seems to be of great 3.3 Clinical presentation importance for understanding the pathogenesis and the clinical history of both primary and secondary In our review, 31 cases of on/onsc meningocele oc- optic nerve cysts [2, 11]
Comment. Ectasia of the optic nerve sheath is a rare finding in imaging studies, and various terms have been used to desribe this entity: arachnoid cyst,4 optic hydrops,5 patulous subarachnoid space,6 and meningocele.2 Concerning pathogenesis and associated diseases, Shanmuganathan et al7 reviewed the literature and identified a patient group with associated progressive hyperopia and choroidal. Optic nerve sheath meningiomas (ONSM) are rare benign tumors of the optic nerve. 60-70% of cases occur in middle age females, and is more common in older adults (mean age 44.7 years).It is also seen in children, but this is rare. The tumors grow from cells that surround the optic nerve, and as the tumor grows, it compresses the optic nerve
Bilateral idopathic optic nerve sheath meningocele associated with unilateral transient cystoid macular oedema 13 November 2002 | Eye, Vol. 16, No. 6 A long-term visual outcome comparison in patients with optic nerve sheath meningioma managed with observation, surgery, radiotherapy, or surgery and radiotherapya aNo author has any commercial. Patients with optic nerve meningocele may present with headache, and transient or permanent visual loss.1 Ocular findings other than papilledema have been reported as progressive hyperopia, choroidal folds and cystoid macular edema.1,8,10 More than 30 patients with optic nerve sheath meningo- cele have been described in the literature.1-4,11. The CT appearance of nerve sheath tumors and optic gliomas is discussed in detail in Chapter 29. Optic gliomas characteristically display an intra-axial enlargement of the optic nerve by the time of presentation (Figs. 29.21, 29.22, and 56.1). CT changes may be subtle unless a difference in nerve/sheath complex size of about 2 to 3 mm is observed Optic nerve sheath meningocele in a 5-year-old girl with bilateral blurring of vision and congenital glaucoma. Axial (A) and sagittal (B) T2W MR images show expansion of bilateral optic nerve sheaths (arrows) with normal sized optic nerves. Note the deep cupping of optic discs. (Color version of figure is available online. She was diagnosed as dural ectasia of the optic nerve sheaths and surgical decompression was performed. In this case report, severe visual loss is described as a serious complication of this rare disease and the importance of early surgical intervention is emphasized. Keywords: optic nerve, dural ectasia, meningocele
Dural ectasia can present as internal auditory canal ectasia without 7th or 8th cranial nerve masses (Figure 4) and can be present as dural ectasia of the optic nerve sheath. 11, 12 In the spine, lateral and anterior meningoceles commonly occur in the thoracic spine due to pressure differences between the thorax and subarachnoid space with. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): http://europepmc.org/articles/... (external link مرکزی صفحہ Child's Nervous System Patient with congenital optic nerve meningocele presenting with left orbital cyst. Child's Nervous System 2009 / 02 Vol. 25; Iss. 2. Patient with congenital optic nerve meningocele presenting with left orbital cyst Justin C. Spooler, David Cho, Andrea Ray, Alexander Zouros The MRI scan is the gold standard in diagnosing the condition along with associated lesions like encephalocele , optic nerve sheath meningocele , absence of septum pellucidum ,transsphenoidal encephalocele, hydrocephalus etc. ,. Usually, the bony orbit does not develop in congenital cystic eye requiring conformers for expanding it ,
Meningioma of the optic nerve sheath infiltrating the posterior globe and hemangioblastoma (von Hippel-Lindau disease) may also produce intraglobal calcifications. TB, optic neuritis, and toxoplasmosis), trauma (perioptic hematoma), distended optic nerve sheath, and optic nerve sheath meningocele.. Optic nerve sheath dilatation forming a cyst containing cerebrospinal fliud (CSF) is a rare condition. It is actually an enlargement and dilation of primarily the optic nerve sheath. There is an expansion of the cerebrospinal fliud space around the optic nerve with no associated inflammation, orbital or cerebral neoplasm at the apex of the orbit Optic Nerve Sheath Meningocele Simulating an Optic Nerve Pit. Sara E. Lally, Ann P. Murchison, Adam E. Flanders, Jurij R. Bilyk> ;Ophthalmic Plastic and Reconstructive Surgery. 2017 Jul 1 3 citation M. Sean Grady, MD is Physician Director, Neuroscience Service Line and Professor of Neurosurgery. Dr. Grady is board certified in Neurological Surgery and sees patients at Penn Neuroscience Center - Neurosurgery and Penn Pituitary Center
Optic Nerve is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings).Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity Define meningocele. meningocele synonyms, meningocele pronunciation, meningocele translation, English dictionary definition of meningocele. n. A moderately severe form of spina bifida in which the meninges protrude, causing a bulge under the skin Optic nerve sheath meningioma accounts for 2% of orbital tumors, 1% of central nervous system meningiomas, and 40% of optic nerve tumors. Pediatric (< 20 years old) primary optic nerve sheath meningioma represents less than 5% of cases and can be more aggressive with high recurrence rates and intracranial extension even after surgical resection
Optic Nerve Sheath Meningioma Next. Spheno-Orbital Meningioma (Sphenoid Wing Meningioma) Elevated intracranial pressure with associated optic nerve swelling is rare. Optic nerve swelling or pallor can also occur from intracanal compression. meningocele or motility deficits from extraocular muscle pathway abnormalities The optic nerve sheath and the annulus of Zinn, a concentric ring formed by the anterior end of the fibrous sheath, may be incised to decompress the optic nerve entirely and relieve any edema or posttraumatic intra-sheath hemorrhage, pneumatization, or meningocele formation [85,86,87] Arachnoid cyst of the optic nerve is a lesser recognized entity. Similar to the intracranial arachnoid cysts, they follow fluid signal intensity on all sequences. They are seen as a saccular dilatation of the meninges surrounding the orbital portion of the optic nerve. They are also called as optic neural sheath meningocele, optic nerve sheath. In the current literature, studies comparing optic nerve sheath diameter (ONSD) with invasive measured intracranial pressure (ICP) revealed a good general correlation of these values in both adult [1,2,3] and pediatric patients [4,5,6].The largest studies in the pediatric age were performed under general anesthesia either intraoperatively or in patients at the intensive care unit (ICU)