Results 1 to 10 of about 98,886 (297)

Optic nerve neoplasms, their cytology and cytopathology

open access: yesKazan medical journal, 1935
Over the past decades, about 300 cases of optic nerve neoplasms have been described in the literature. It was assumed that some of them grew from the sheath of the nerve, but most of them originated from their own nerve trunk. The histological structure of tumors of the latter kind was determined in different ways, less than a third of them were ...
S. B. Enaleev
openaire   +2 more sources

Demographic and prognostic factors of optic nerve astrocytoma: a retrospective study of surveillance, epidemiology, and end results (SEER)

open access: yesBMC Cancer, 2021
Background Optic nerve astrocytomas (ONAs) are neurological neoplasms in the central nervous system (CNS), and they have the highest incidence rate among all the tumor types in the visual pathway. In this study, we conducted a Surveillance, Epidemiology,
Mingui Zhang, Tao Chen, Yisheng Zhong
doaj   +2 more sources

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

open access: yesEye and Brain, 2018
Richard T Parker,1 Christopher A Ovens,1 Clare L Fraser,2 Chameen Samarawickrama1,3 1Sydney Medical School, Discipline of Clinical Ophthalmology and Eye Health, University of Sydney, Sydney, NSW, Australia; 2Save Sight Institute, University of Sydney ...
Parker RT   +3 more
doaj   +2 more sources

Recurrence of solitary extramedullary plasmacytoma affecting both optic nerves: a case report [PDF]

open access: yesAmerican Journal of Ophthalmology Case Reports
Purpose: To present a case of atypically located plasmacytoma recurrence with bilateral involvement of the optic nerves. Observations: A 73-year-old man with diabetes, essential hypertension, and primary hypercholesterolemia presented to our clinic with ...
Pablo Ballester Dolz   +2 more
doaj   +2 more sources

The Optic Nerve Sheath Meningocele

open access: yesSwiss Journal of Radiology and Nuclear Medicine
Optic nerve sheath meningocele (ONSM) is a rare condition with only a few cases reported in the medical literature. The etiology is unknown. The condition is characterized by an expansion of the cerebrospinal fluid space surrounding the optic nerve ...
Ilson Sepúlveda Aguilar   +1 more
doaj   +2 more sources

The role of optical coherence tomography in the evaluation of para-chiasmal lesions: a systematic review and meta-analysis [PDF]

open access: yesFrontiers in Ophthalmology
IntroductionWhile magnetic resonance imaging is currently the primary diagnostic tool for pituitary tumors, optical coherence tomography (OCT) may be used in evaluating the visual pathway impact of these lesions.
Khai Shin Alva Lim   +9 more
doaj   +2 more sources

A Rare Case of Optic Nerve Sheath Meningioma [PDF]

open access: yesBengal Physician Journal, 2023
Optic nerve sheath meningiomas (ONSMs) are benign neoplasms originating from the arachnoid cap cells located in the dural sheath surrounding the orbital or intracanalicular portion of the optic nerve. Multiple meningiomas have most commonly been found to
Sivaroja Yellaturi   +6 more
doaj   +1 more source

Optic nerve sheath carcinomatosis masquerading as optic perineuritis: The first sign of gastric cancer relapse

open access: yesThe Pan-American Journal of Ophthalmology, 2021
Optic perineuritis (OPN) is a rare inflammatory disease involving the optic nerve sheath. Most cases are idiopathic, but associations with a variety of infectious and inflammatory conditions have been described. Patients with suspected OPN should also be
Joana Roque   +3 more
doaj   +1 more source

Ocular glioma in dog: Case report

open access: yesPubvet, 2021
The objective is to report the case of a Transmontano Mastiff dog, eight year old intact male, 88 kg, with history of visual loss, diffuse corneal edema and secondary glaucoma. The ocular ultrasound examination revealed a hyperechoic structure located in
Tarcísio Guerra Guimarães   +5 more
doaj   +1 more source

Rare primary choroidal melanoma in a dog, with optic nerve infiltration

open access: yesBrazilian Journal of Veterinary Research and Animal Science, 2022
Intraocular melanocytic neoplasms are common in dogs. However, the choroidal location of these neoplasms and their infiltration into the optic nerve are unusual. This paper reports a case of primary choroidal melanoma in a 12-year-old male Dachshund.
Geórgia Bajer Fernandes de Freitas Porfirio   +3 more
semanticscholar   +1 more source

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