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Orbital Mri

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https://read.qxmd.com/read/30873845/smarcb1-deficient-sinonasal-carcinoma-a-case-report-and-discussion-of-the-clinical-implications
#1
Vanessa Trieu, Ricardo Mario Aulet, Allison Ciolino, Tamara Rimash
OBJECTIVE: SMARCB1-deficient sinonasal tract carcinomas are an emerging subset of rare tumors recently described in the literature, with less than 100 reported cases. Given the aggressive nature of this tumor, timely diagnosis is especially important. We present a case report of a SMARCB1-deficient carcinoma of the sinonasal tract. METHODS: Case report with review of the literature. RESULTS: The patient was a 53-year-old male with computed tomography (CT)-proven mass of the right ethmoid and sphenoid sinuses...
March 15, 2019: Annals of Otology, Rhinology, and Laryngology
https://read.qxmd.com/read/30856631/hybrid-neurofibroma-schwannoma-of-the-orbit
#2
Louis J Stevenson, Elizabeth M McElnea, Penelope A McKelvie, Thomas G Hardy
A 68-year-old female presented for assessment of a space occupying lesion of her right orbit, demonstrated on MRI. An upper lid crease anterior orbitotomy was performed and the lesion excised completely. Postoperatively, she had reduced sensation in the distribution of the supraorbital nerve. Histopathologic examination of the excised lesion revealed a hybrid neurofibroma/schwannoma. This represents the fourth reported case of such a lesion arising within the orbit.
March 2019: Ophthalmic Plastic and Reconstructive Surgery
https://read.qxmd.com/read/30854495/concurrent-acute-retinal-necrosis-and-orbital-inflammation-report-of-2-cases
#3
Swarup S Swaminathan, Nicolas A Yannuzzi, Andrew J Rong, Ashley M Crane, Thomas A Albini
Purpose: To describe the rare entity of concurrent herpetic acute retinal necrosis (ARN) and orbital inflammation. Observations: Two cases of ARN with simultaneous orbital inflammation are described. A 40-year old male presented with a painful left eye and hand motion visual acuity (VA). Both panuveitis and orbital inflammation with involvement of the sclera and optic nerve were observed. He was initially treated with oral steroid therapy, after which the orbital inflammation improved but the panuveitis remained...
June 2019: American Journal of Ophthalmology Case Reports
https://read.qxmd.com/read/30848373/best-zero-level-for-external-icp-transducer
#4
Peter Reinstrup, Mårten Unnerbäck, Niklas Marklund, Wilhelm Schalen, Jesus Cabrera Arrocha, Eric L Bloomfield, Vahabi Sadegh, Karin Hesselgard
BACKGROUND: Continuous monitoring of intracranial pressure (ICP) was introduced in the 1950s. For correct ICP recordings, the zero-reference point for the external pressure gauge must be placed next to a head anatomical structure. We evaluated different anatomical points as zero reference for the ICP device at different head positions and their relation to brain centre (BC), foramen of Monro (Monro), and brain surface. METHODS: Patients referred for neuroimaging due to e...
March 8, 2019: Acta Neurochirurgica
https://read.qxmd.com/read/30843517/-reconstruction-of-isolated-orbital-floor-fractures-by-nasoseptal-cartilage
#5
B Gál, J Hložek, T Hložková, D Slouka, R Kostřica
PURPOSE OF THE STUDY The incidence of isolated orbital floor fractures has an increasing tendency. Their optimal management is not uniform and is still being discussed in the literature. The therapeutic decision as to whether surgical intervention is necessary or conservative approach is adequate vitally depends on clinical and CT findings. Incorrect treatment can lead to serious consequences, especially to persistent diplopia and enophthalmos. The objective of our study was to evaluate the radiological indication criteria for surgery and the clinical outcomes thereafter...
2019: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://read.qxmd.com/read/30841683/-clinical-characteristics-of-myelin-oligodendrocyte-glycoprotein-antibody-positive-optic-neuritis
#6
H L Song, S H Wei
Objective: To investigate the clinical characteristics and prognosis of myelin oligodendrocyte glycoprotein(MOG) antibody-positive optic neuritis (MOG-ON). Methods: Retrospective case series study. A total of 65 patients diagnosed with MOG-ON at the Department of Ophthalmology of the Chinese People's Liberation Army General Hospital during January 2016 and October 2017 were selected. The patients underwent examinations including best corrected visual acuity (BCVA), fundus color photography, optical coherence tomography (OCT) and magnetic resonance imaging (MRI)...
March 11, 2019: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://read.qxmd.com/read/30820056/congenital-multiple-ocular-motor-nerve-palsy-complicated-by-splitting-of-the-lateral-rectus-muscle
#7
Reika Kono, Takehiro Shimizu, Hiroshi Ohtsuki, Ichiro Hamasaki, Kiyo Shibata, Fumiko Kishimoto, Yuki Morizane, Fumio Shiraga
We report a case of congenital multiple ocular motor nerve palsy combined with splitting of the lateral rectus muscle (LR). A 59-year-old Japanese female was investigated for worsening esotropia after corrective surgery. She presented with left hypertropia (35Δ) and esotropia (45-50Δ). Orbital magnetic resonance imaging (MRI) showed reduced belly sizes in the superior rectus, inferior rectus, and superior oblique muscles and splitting of the LR, extending from the origin to the belly, in the left eye. Splitting of the LR belly was detected on MRI in a case of congenital multiple ocular motor nerve palsy...
February 2019: Acta Medica Okayama
https://read.qxmd.com/read/30809402/idiopathic-isolated-acquired-steroid-dependent-so-palsy-a-rare-case-report
#8
Isha Agarwal, Mayuresh Naik, HarinderSingh Sethi
15-year-old boy presented with sudden onset, stable, nonprogressive painless diplopia (greatest in right gaze and inferior field of view) and hyperdeviation of left eye for a year. On ophthalmic examination, the patient had uncrossed diplopia with tilt and separation maximum in dextrodepression. On Park's three step test, left eye hypertropia increased on right gaze and left tilt suggestive of left superior oblique (SO) palsy. On prism bar cover test (PBCT), deviation was more than 25 PD base-down over the left eye for both distance and near in all gazes...
2019: Case Reports in Ophthalmological Medicine
https://read.qxmd.com/read/30776845/-magnetic-resonance-imaging-of-the-orbital-cavity-indications-and-diagnostic-possibilities
#9
Helena Posch, Katharina Erb-Eigner
Today, magnetic resonance imaging (MRI) is considered the diagnostic tool of choice for eye and orbital pathologies. In this article, the MR image characteristics of relevant pathologies are illustrated with case-based examples in the context of clinical findings. Vascular pathologies (such as capillary and cavernous hemangioma), inflammatory diseases (such as endocrine orbitopathy), and neoplasms (such as lymphoma, uveal melanoma, retinoblastoma, and ocular/orbital metastasis) are described. Additionally, the role of MRI in the acute clinical setting and in trauma are discussed...
February 18, 2019: Klinische Monatsblätter Für Augenheilkunde
https://read.qxmd.com/read/30765381/diagnostic-utility-of-optic-nerve-measurements-with-mri-in-patients-with-optic-nerve-atrophy
#10
B Zhao, N Torun, M Elsayed, A-D Cheng, A Brook, Y-M Chang, R A Bhadelia
BACKGROUND AND PURPOSE: No MR imaging measurement criteria are available for the diagnosis of optic nerve atrophy. We determined a threshold optic nerve area on MR imaging that predicts a clinical diagnosis of optic nerve atrophy and assessed the relationship between optic nerve area and retinal nerve fiber layer thickness measured by optical coherence tomography, an ancillary test used to evaluate optic nerve disorders. MATERIALS AND METHODS: We evaluated 26 patients with suspected optic nerve atrophy (8 with unilateral, 13 with bilateral and 5 with suspected but not demonstrable optic nerve atrophy) who had both orbital MR imaging and optical coherence tomography examinations...
February 14, 2019: AJNR. American Journal of Neuroradiology
https://read.qxmd.com/read/30764790/bisphosphonate-induced-orbital-inflammation-in-a-patient-on-chronic-immunosuppressive-therapy
#11
Isabella Herrera, Yong Kam, Thomas J Whittaker, Mary Champion, Radwan S Ajlan
BACKGROUND: To report a case of orbital inflammation after bisphosphonate infusion in a patient who was already receiving immunosuppressive therapy. CASE PRESENTATION: A 56-year-old woman presented to the ophthalmology clinic with acute onset of right eye pain 24 h after receiving her first Zolendronic acid infusion. She has a past medical history of chronic inflammatory demyelinating polyneuropathy, Sjogren's syndrome, and systemic lupus erythematosus that have been controlled with immunosuppressive therapy for three years...
February 14, 2019: BMC Ophthalmology
https://read.qxmd.com/read/30762615/abnormal-amygdala-resting-state-functional-connectivity-in-primary-dysmenorrhea
#12
Zhifu Shen, Siyi Yu, Minyu Wang, Tianwei She, Ya Yang, Yanan Wang, Wei Wei, Xiaoli Guo, Youping Hu, Fanrong Liang, Jie Yang
Neuroimaging studies have manifested functional abnormalities in pain-related brain regions in patients with primary dysmenorrhea (PDM). However, as the key region in brain pain matrix, whether and how the amygdala functional network alteration in PDM is unclear. In this study, we aimed to investigate the intrinsic amygdala functional connectivity (AFC) network alteration in patients with PDM during ovulatory period. Thirty-six PDM patients and 35 matched healthy controls were enrolled in this study. The AFC was constructed using amygdala-based functional connectivity using resting-state functional MRI data...
February 11, 2019: Neuroreport
https://read.qxmd.com/read/30760894/yield-of-screening-blood-work-and-mri-of-the-brain-and-orbits-in-the-work-up-of-unilateral-chronic-optic-neuropathy
#13
Elie Côté, Ari Aharon Shemesh, Lili Tong, Cindy T Y Lam, Edward Margolin
BACKGROUND/OBJECTIVES: No guidelines exist for the investigation of treatable causes of chronic optic neuropathy, including sarcoidosis, lupus, and syphilis. The purpose of this study was to determine the diagnostic yield of screening blood work (ACE (Angiotensin Converting Enzyme) for sarcoidosis, Antinuclear Antibodies (ANA) for lupus, CMIA (chemiluminescence microparticle enzyme immunoassay) for syphilis) and contrast-enhanced MRI brain and orbits in atypical unilateral chronic optic neuropathy...
February 13, 2019: Eye
https://read.qxmd.com/read/30758759/vascular-floor-of-mouth-mass-with-unanticipated-intracranial-orbital-and-vertebral-associated-involvements
#14
Ho-Hyun Brian Sun, Sheng-Chuan Lin, Benjamin Shimel, Chan M Park, Supreeth Sharaschandra
We report on a case in which a blanching, unobtrusive oral growth proved to be a systemic threat. A blind, epileptic child presented with a bleeding oral floor mass of 4 weeks. Biopsy showed small, dilated vascular spaces with reactive fibroblasts. MRI indicated distribution of expansile lesions in the mandible, cranial base, and right orbit that had possibly contributed to the patient's years-long neurologic deficits. A subsequent bone scan indicated lesions in multiple axial bones. Histologic markers confirmed the presentation of a rare cystic vascular pathology...
February 13, 2019: Head and Neck Pathology
https://read.qxmd.com/read/30741560/neurofibromatosis-type-1-description-of-a-novel-diagnostic-scoring-system-in-pediatric-optic-nerve-glioma
#15
Hadeel Eid, Gabriel Crevier-Sorbo, Ahmed Aldraihem, Flavia Menegotto, Nagwa Wilson
OBJECTIVE: Neurofibromatosis type 1 (NF1) is a multisystemic genetic disease in which patients develop benign tumors including optic nerve gliomas (ONG). Optic nerve thickening and tortuosity are radiologic markers of tumors but can also be present in children with NF1 who do not have gliomas, thus complicating screening and diagnosis. We undertook this study to retrospectively determine quantitative and qualitative diagnostic criteria using MRI of the orbits for ONG in children with NF1...
February 11, 2019: AJR. American Journal of Roentgenology
https://read.qxmd.com/read/30711379/-brown-s-syndrome
#16
REVIEW
D Denis, P Lebranchu, M Beylerian
Brown's syndrome is related to an abnormality of the superior oblique muscle: it is manifested by an oculomotor disorder with active and passive limitation of elevation in adduction, the field of action of the inferior oblique muscle. The origin is congenital or acquired secondary to multiple causes - inflammatory-infectious, traumatic or iatrogenic. The clinical and paraclinical signs are suggestive. Cerebral and orbital imaging including CT and magnetic resonance imaging (MRI) is essential for the diagnosis and management of congenital or acquired Brown's syndrome...
January 30, 2019: Journal Français D'ophtalmologie
https://read.qxmd.com/read/30705795/orbital-venous-varices-a-rare-bilateral-asymptomatic-presentation
#17
Alexandros Pappas, Julio M Araque, Vimal Sarup
This report illustrates a case of asymptomatic bilateral orbital varices in a 64-year-old Caucasian male. The orbital varices were incidentally discovered while investigating the patient's initial presentation of bilateral chorioretinal scars and optic nerve head drusen. Magnetic resonance imaging (MRI) of the brain and orbits with contrast confirmed the presence of bilateral varices of the inferior ophthalmic veins and pterygoid plexuses. The occurrence of bilateral orbital varices is quite rare, and few asymptomatic cases have been described in the literature...
September 14, 2018: Curēus
https://read.qxmd.com/read/30690697/-orbital-manifestation-of-igg4-related-disease-three-case-reports
#18
Judith Kroll, Susanne Pitz, Marc A Brockmann
IgG4-related orbital disease is rare. It belongs to an entity of a multisystemic disorder - IgG4-related disease - which has emerged recently. Differential diagnosis comprises idiopathic orbital inflammation, endocrine orbitopathy and orbital neoplasms. MRI imaging and orbital biopsy are essential in making the diagnosis. Patients respond well to systemic steroids. We now describe three clinically markedly different manifestations of IgG4-related orbital disease.
January 2019: Klinische Monatsblätter Für Augenheilkunde
https://read.qxmd.com/read/30679243/identification-of-a-lipid-rich-depot-in-the-orbital-cavity-of-the-13-lined-ground-squirrel
#19
Amanda D V MacCannell, Kevin J Sinclair, Glenn J Tattersall, Charles A McKenzie, James F Staples
We discovered a previously undescribed orbital lipid depot in the 13-lined ground squirrel during the first ever magnetic resonance image (MRI) of this common experimental model of mammalian hibernation. In animals housed at constant ambient temperatures (5°C or 25°C, 12h L:12h D photoperiod) the volume of this depot increased in the autumn and decreased in the spring, suggesting an endogenous circannual pattern. Water-fat MRI revealed that throughout the year this depot is composed of ∼40% lipid, similar to brown adipose tissue (BAT)...
January 24, 2019: Journal of Experimental Biology
https://read.qxmd.com/read/30678648/bone-wax-migrates-to-the-orbit-in-a-patient-with-a-frontal-sinus-abnormality-a-case-report
#20
Yangbo Zhou, Minhong Li, Xin Wei, Xue Yang, Jialin Zhang, Xin Qi
BACKGROUND: Bone wax is the most widely used hemostatic bone sealant because of its availability, ease of use, immediate action, and minimal adverse effects. Several complications have been reported to be associated with the use of bone wax, such as infection, osteohypertrophy, pain, granuloma formation, allergic reaction, and thrombosis. Here, we present a rare complication, namely, bone wax migration, which developed after a craniotomy on a patient who had a frontal sinus abnormality...
January 24, 2019: BMC Ophthalmology
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