Optociliary veins in optic nerve sheath meningioma

Muci-Mendoza, Rafael; Arévalo, J. Fernando; Ramella, Marcos; Fuenmayor-Rivera, Dario; Karam, Emely; Cárdenas, P.L.; Recio, Maria V

doi:10.1016/s0161-6420(99)90055-6

Cited by 29 publications

(4 citation statements)

References 17 publications

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“… 25 Such vessels can be imaged in detail using indocyanine-green angiography. 26 The shrinkage of optociliary shunt vessels suggests a reduction in central retinal venous pressure, which may be part of the mechanism behind vision improvement even when no macroscopic change in tumor volume is apparent. 27 …”

Section: Clinical Featuresmentioning

confidence: 99%

Optic nerve sheath meningiomas: prevalence, impact, and management strategies

Parker

Ovens

Fraser

et al. 2018

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Optic nerve sheath meningiomas are rare benign neoplasms of the meninges surrounding the optic nerve. They are a significant cause of morbidity. While the mortality rate is practically zero, these tumors can blind or disfigure patients. Given that the clinical course can be variable, and treatment has the capacity to cause morbidity itself, the management of these patients can be difficult. We review the literature to discuss the prevalence of optic nerve sheath meningiomas, the association with neurofibromatosis type 2, natural history, and management options and strategies.

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Section: Clinical Featuresmentioning

confidence: 99%

Optic nerve sheath meningiomas: prevalence, impact, and management strategies

Parker

Ovens

Fraser

et al. 2018

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“…For treatment of ONSM, surgical resection can be of choice for certain cases, especially for large tumors leading to intraorbital pressure and compression; for asymptomatic patients, however, also a wait-and-see strategy might be followed, and patients with remaining useful vision and no tumor progression have been observed in the past [13]. …”

Section: Introductionmentioning

confidence: 99%

Prior surgical intervention and tumor size impact clinical outcome after precision radiotherapy for the treatment of optic nerve sheath meningiomas (ONSM)

et al. 2011

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PurposeWe analyzed our long-term experience with fractionated stereotactic radiotherapy (FSRT) in patients with meningioma of the optic nerve sheath (ONSM).Patients and MethodsBetween January 1991 and January 2010, 40 patients with ONSM were treated using FSRT. Of these, 19 patients received radiotherapy as primary treatment, and 21 patients were treated after surgical resection. The median target volume was 9.2 ml, median total dose was 54 Gy in median single fractions of 1,8 Gy.ResultsLocal progression-free survival was 100%. Median survival after FSRT was 60 months (range 4-228 months). In all patients overall toleration of FSRT was very good. Acute toxicity was mild. Prior to RT, 29 patients complained about any kind of visual impairment including visual field deficits, diplopia or amaurosis. Prior surgical resection was identified as a negative prognostic factor for visual outcome, whereas patients with larger tumor volumes demonstrated a higher number of patients with improvement of pre-existing visual deficits.ConclusionLong-term outcome after FSRT for ONSM shows improved vision in patients not treated surgically prior to RT; moreover, the best improvement of visual deficits are observed in patients with larger target volumes. The absence of tumor recurrences supports that FSRT is a strong alternative to surgical resection especially in small tumors without extensive compression of normal tissue structures

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“…In ONSM, this resistance is caused by optic nerve compression by the surrounding tumor and optic disc edema [ 2 ]. Muci-Mendoza et al [ 3 ] found an inverse relationship between the degree of optic disc edema and the development and easiness of visualization of the optociliary veins and their draining course through the choroidal circulation. Fluorescein angiography is unable to visualize the choriocapillaris due to absorption of the excitation wavelength by the RPE and the diffuse leakage of fluorescein from the fenestrated choriocapillaris [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

Optical Coherence Tomography Angiography Findings in Optic Nerve Sheath Meningioma

Interlandi¹,

Pellegrini

Papayannis

et al. 2020

Case Rep Ophthalmol

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A 46-year-old female with a history of 5 months of progressive painless visual loss in the left eye was found to have an optic nerve sheath meningioma. Optical coherence tomography angiography showed a reduction in the superficial capillary plexus density consistent with her visual field defect and peripapillary retinal nerve fiber layer thinning. Moreover, abnormalities in the choriocapillaris were found in the affected eye compared to the fellow eye. Possible explanations for these findings are discussed. Further studies and a consistent number of cases are needed to correctly assess the impairment of ocular blood flow in optic nerve sheath meningioma.

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Optociliary veins in optic nerve sheath meningioma

Cited by 29 publications

References 17 publications

Optic nerve sheath meningiomas: prevalence, impact, and management strategies

Optic nerve sheath meningiomas: prevalence, impact, and management strategies

Prior surgical intervention and tumor size impact clinical outcome after precision radiotherapy for the treatment of optic nerve sheath meningiomas (ONSM)

Optical Coherence Tomography Angiography Findings in Optic Nerve Sheath Meningioma

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