Results 51 to 60 of about 21,956 (166)

The cell of origin dictates the temporal course of neurofibromatosis-1 (Nf1) low-grade glioma formation [PDF]

open access: yes, 2017
Low-grade gliomas are one of the most common brain tumors in children, where they frequently form within the optic pathway (optic pathway gliomas; OPGs).
Gutmann, David H   +19 more
core   +2 more sources

Orbital Ultrasound [PDF]

open access: yes, 1990
Basic echographic examination of the orbit, vascular neoplasms, optic nerve disorders, and lacrimal gland ...
Green, Ronald L, R. Green
core  

A Practice Pathway for the Management of Gliomas of the Anterior Visual Pathway: An Evidence-Based Approach [PDF]

open access: yes, 1999
Gliomas are slow growing neoplasms that may affect the visual pathway. We define optic pathway gliomas (OPG) as gliomas involving the optic nerve, chiasm, or optic tracts with or without involvement of the hypothalamus or third ventricle ...
Andrew G. Lee
core  

The orbit, including the lacrimal gland and lacrimal drainage system [PDF]

open access: yes, 2015
This book is a comprehensive, in-depth, and up-to-date resource on eye pathology that will be of great practical value for ophthalmic and general pathologists and ophthalmologists.
Verdijk RM, Pecorella I, Mooy C
core   +1 more source

Second primary malignancies of eye and ocular adnexa after a first primary elsewhere in the body [PDF]

open access: yes, 2020
Purpose!#!The eye and its adnexal structures can give rise to first or consecutive primary malignancies or to encounter metastasis. Our aim was to define the characteristics of the second primary neoplasms affecting the eye and its adnexa and find the ...
Saad, Anas   +5 more
core   +1 more source

A case of extramedullary plasmacytoma in the sphenoid sinus with unilateral loss of vision [PDF]

open access: yes, 2013
PubMedID: 22795167Extramedullary plasmacytomas are localized tumours formed of monoclonal plasma cells in an extra-skeletal area. They constitute approximately 3% of all neoplasms originating from plasma cells. They generally display a destructive course.
Tuncer Ü.   +5 more
core   +1 more source

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

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   +1 more source

Optic Nerve Tumors: Diagnosis and Therapy [PDF]

open access: yes
Powerppoint lecture covers a patient case, differential diagnosis, and optic nerve anatomy. Also includes examination information, fundus images and visual field defects. Presenting Symptom: Proptosis; Hemianopsia; Scotoma.
Alfredo A. Sadun, MD, PhD
core  

Ganglioglioma Associated with Cerebral Cortical Dysplasia: An Unusual Case with Extensive Leptomeningeal Involvement [PDF]

open access: yes, 2008
Ganglioglioma is a tumor occurring in children and young adults and characterized by a superficial cortical location and biphasic histologic differentiation encompassing neuronal and glial elements.
Jayarao, Mayur   +3 more
core   +1 more source

Melanocitoma do nervo óptico Optic disk melanocytoma: bibliographic review

open access: yesRevista Brasileira de Oftalmologia, 2008
O melanocitoma do disco óptico é bem conhecido como uma variante do nervo melanocítico que geralmente ocorre no disco óptico. Historicamente o tumor foi confundido com melanoma maligno.
Enéias Bezerra Gouveia   +1 more
doaj   +1 more source

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