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Orbital Mri

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https://www.readbyqxmd.com/read/30340800/gray-matter-changes-in-panic-disorder-a-voxel-based-meta-analysis-and-meta-analytic-connectivity-modeling
#1
Yun Wu, Yuan Zhong, Zijuan Ma, Xin Lu, Ning Zhang, Peter T Fox, Chun Wang
Magnetic resonance imaging (MRI) studies of panic disorder (PD) have discovered various damaged brain regions, with heterogeneous results across studies. The present study used meta-analytic approaches to discover gray matter (GM) changes consistently detected in PD and to characterize the functional and connectivity profiles of these regions. In the present study we first conducted an activation likelihood estimation (ALE) meta-analysis of eight eligible whole-brain VBM studies. Then, meta-analytic connectivity modeling analyses (MACMs) were used to provide co-atrophy and co-activation profiles across all the experiments stored in BrainMap...
October 2, 2018: Psychiatry research. Neuroimaging
https://www.readbyqxmd.com/read/30337283/resolved-heart-tamponade-and-controlled-exophthalmos-facial-pain-and-diabetes-insipidus-due-to-erdheim-chester-disease
#2
Jaume Monmany, Esther Granell, Laura López, Pere Domingo
A 69-year-old woman suffering from exophthalmos and facial pain came to us referred for aetiological diagnosis of exophthalmos. Orbital MRI showed thinned extrinsic ocular musculature, intraconal fat infiltration, retro-ocular compression and thickening of maxillary and sphenoid sinus walls. She had been suffering from diabetes insipidus for the last 7 years. During our diagnosis process, she presented signs of cardiac tamponade. Transthoracic heart ultrasound revealed large pericardial effusion and a heterogeneous mass that compressed the right ventricle...
October 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/30334973/osteoblastoma-of-the-frontal-bone-invading-the-orbital-roof-a-case-report
#3
Kun Wang, Feidan Yu, Keng Chen, Huanjiang Niu, Yirong Wang, Shuxu Yang, Xiujun Cai
RATIONALE: Osteoblastoma is an uncommon primary bone tumor that involves any part of the skeleton. But its occurrence in the skull is extremely rare. PATIENTS CONCERNS: A 30-year-old female was admitted to our hospital, because of the mass in the right frontal region with the history of headache for 3 years without nausea or vomiting. DIAGNOSIS: Initial differential diagnoses included hemangiopericytoma, atypical intraosseous meningioma, calvarial osteosarcoma, fibrous dysplasia, and histiocytosis, based on the results of enhanced CT and MRI...
October 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30333924/retrobulbar-optic-neuropathy-associated-with-sphenoid-sinus-mucormycosis
#4
Tatsuhiko Sano, Zen Kobayashi, Ken Takaoka, Kiyobumi Ota, Iichiroh Onishi, Mihoko Iizuka, Hiroyuki Tomimitsu, Shuzo Shintani
Because fungi usually spread from the paranasal sinuses to the orbital apex in invasive fungal sinusitis (IFS), IFS often presents as an orbital apex syndrome (OAS) characterized by dysfunction of cranial nerves II, III, IV, V1, and VI. We report a case of sphenoid sinus mucormycosis that presented as isolated retrobulbar optic neuropathy. A 94-year-old woman presented with acute blindness in the right eye. Examination revealed the absence of light perception and pupillary reflex in the right eye. Head MRI showed a mass in the right sphenoid sinus, which was contiguous with the right optic nerve...
September 2018: Neurology and Clinical Neuroscience
https://www.readbyqxmd.com/read/30320718/septic-cavernous-sinus-thrombosis-associated-with-orbital-cellulitis-a-report-of-6-cases-and-review-of-literature
#5
Sara V Branson, Elysa McClintic, R Patrick Yeatts
PURPOSE: To describe risk factors, clinical parameters, treatment, and prognosis for patients with septic cavernous sinus thrombosis presenting with orbital cellulitis. METHODS: Retrospective case series of 6 patients identified with septic cavernous sinus thrombosis and orbital cellulitis confirmed by magnetic resonance imaging at a tertiary care center from January 1980 to December 2016. Medical records were reviewed for demographics, risk factors, symptoms, etiology, radiographic diagnosis, complications, treatments, and outcomes...
October 9, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/30320716/socket-reconstruction-with-bleomycin-gentamicin-and-gelatin-sponges-following-eyelid-sparing-orbital-exenteration-for-a-colobomatous-macrocyst-in-an-infant
#6
Sarah J Michelson, Marina R Ciongoli, Victor M Elner, Alon Kahana
Microphthalmia is defined by a globe axial length greater than or equal to 2 standard deviations below the age-adjusted mean and can occur as part of a broader syndrome. The presence of a colobomatous cyst with microphthalmia signifies failure of the embryonic neuroectodermal fissure to close appropriately during development of the globe, creating a protuberant globular appendage that inhibits normal growth and development of the eye itself. Cystic reaccumulation of fluid is common after aspiration or surgical removal...
October 9, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/30320086/clinicopathologic-and-magnetic-resonance-imaging-analysis-of-a-multifocal-orbital-lymphoid-tumor
#7
Frederick A Jakobiec, Natalie Homer, Fouad R Zakka, Hugh D Curtin, Aaron Fay
Objective: To distinguish between a multifocal orbital lymphoid tumor and a major simulator represented by a diffuse lymphaticovenous malformation. Methods: We performed a comparison of clinical and radiographic (magnetic resonance imaging [MRI]) findings of these two disparate entities and demonstrated how a misdiagnosis can be prevented. Results: Orbital lymphoid tumors develop in adults at around 60 years of age, whereas extensive lymphaticovenous malformations are generally detected in the first decade...
September 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/30319380/fronto-temporal-circuits-in-musical-hallucinations-a-pet-mr-case-study
#8
Carlo Cavaliere, Mariachiara Longarzo, Mario Orsini, Marco Aiello, Dario Grossi
The aim of the study is to investigate morphofunctional circuits underlying musical hallucinations (MH) in a 72-years old female that underwent a simultaneous 18fluoredeoxyglucose positron emission tomography (PET) and advanced magnetic resonance (MR) exam. This represents a particular case of MH occurred in an healthy subject, not displaying neurological or psychopathological disorders, and studied simultaneously with a multimodal approach. For the resting-state fMRI analysis a seed to seed approach was chosen...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/30289825/low-flow-orbital-venous-malformation-masquerading-as-rhabdomyosarcoma
#9
Saagar A Pandit, Kyle J Godfrey, Kristen E Dunbar, Ashley A Campbell, Michael Kazim
A 15-month-old male was referred for biopsy of presumed rhabdomyosarcoma in the setting of rapidly progressing left-sided proptosis. Examination revealed left periorbital edema and left hypoglobus. MRI revealed a soft-tissue density mass within the left lateral retrobulbar space. Several days later, he developed acute periorbital ecchymosis and increasing edema. With high suspicion for a vascular lesion, a CT scan was performed with dynamic arterial and venous imaging. Central filling was noted in the lateral retrobulbar component with increased enhancement on delayed venous imaging in the middle cranial fossa component favoring the diagnosis of a low-flow orbital venous malformation...
September 27, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/30286736/isolated-optic-neuritis-with-a-concurrent-abnormal-trigeminal-nucleus-on-imaging-case-report-of-a-rare-complication-of-herpes-zoster-ophthalmicus
#10
Kavin Vanikieti, Anuchit Poonyathalang, Panitha Jindahra, Piyaphon Cheecharoen, Patchalin Patputtipong, Tanyatuth Padungkiatsagul
BACKGROUND: Herpes zoster ophthalmicus (HZO) is an inflammation related to reactivation of the latent varicella zoster virus (VZV), involving the ophthalmic branch of the trigeminal nerve. Optic neuritis (ON), a rare ocular complication following HZO, has been reported in 1.9% of HZO-affected eyes. Most previous cases occurred simultaneously with other ocular complications, especially orbital apex syndrome. Moreover, detailed magnetic resonance imaging (MRI) with diffusion weighted imaging of the optic nerve and trigeminal nucleus in HZO-related ON has been rarely reported...
October 4, 2018: BMC Neurology
https://www.readbyqxmd.com/read/30277263/magnetic-resonance-imaging-findings-in-dogs-with-orbital-inflammation
#11
M C Fischer, C Busse, A M Adrian
OBJECTIVES: To describe MRI features of canine retrobulbar inflammation, their association with clinical findings and outcome and to assess the value of MRI in detecting orbital foreign bodies. MATERIALS AND METHODS: Clinical records of dogs with confirmed (23 of 31) and suspected (eight of 31) retrobulbar inflammation that underwent low field MRI studies were analysed retrospectively. RESULTS: Of the 31 dogs included in the study there was abscessation in 19...
October 2, 2018: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/30275439/three-dimensional-volume-imaging-to-increase-the-accuracy-of-surgical-management-in-a-case-of-recurrent-chordoma-of-the-clivus
#12
João Pedro Perez Gomes, José de Ribamar Castro Veloso, Albina Messias de Almeida M Altemani, Carlos Takahiro Chone, João Mauricio Carrasco Altemani, Claudio Fróes de Freitas, Carmen Silvia Passos Lima, Paulo Henrique Braz-Silva, Andre Luiz Ferreira Costa
BACKGROUND The clivus is a depression in the anterior occipital bone of the skull base, posterior to the dorsum sellae, at the junction with the sphenoid bone. Chordoma is a rare tumor arising from embryonic remnants of the notochord and can be locally aggressive with a tendency to recur. The optimal management of this rare tumor remains controversial. A report of a case of recurrent chordoma of the clivus is presented to illustrate the value of volumetric three-dimensional (3-D) reconstruction with computed tomography (CT) and magnetic resonance imaging (MRI) to determine optimal surgical management...
October 2, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/30270483/location-and-volume-of-mri-artifacts-in-patients-with-implanted-sphenopalatine-ganglion-neurostimulators-for-treatment-of-chronic-cluster-headache
#13
Martin Jakobs, Jessica Jesser, Tobias Albrecht, Antje Wick, Andreas Unterberg, Rezvan Ahmadi
INTRODUCTION: Sphenopalatine ganglion stimulation (SPG-S) is an invasive form of neuromodulation by which a neurostimulator is implanted into the pterygopalatine fossa to treat refractory chronic cluster headache. The implant is MRI conditional, up to 3 T, however there is no clinical data on the shape, size, and location of the artifact produced by the implant. MATERIALS AND METHODS: Records of patients with SPG-S were analyzed for postoperative cranial MRI scans...
September 30, 2018: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/30238916/characterization-of-relapsing-remitting-multiple-sclerosis-patients-using-support-vector-machine-classifications-of-functional-and-diffusion-mri-data
#14
Mariana Zurita, Cristian Montalba, Tomás Labbé, Juan Pablo Cruz, Josué Dalboni da Rocha, Cristián Tejos, Ethel Ciampi, Claudia Cárcamo, Ranganatha Sitaram, Sergio Uribe
Multiple Sclerosis patients' clinical symptoms do not correlate strongly with structural assessment done with traditional magnetic resonance images. However, its diagnosis and evaluation of the disease's progression are based on a combination of this imaging analysis complemented with clinical examination. Therefore, other biomarkers are necessary to better understand the disease. In this paper, we capitalize on machine learning techniques to classify relapsing-remitting multiple sclerosis patients and healthy volunteers based on machine learning techniques, and to identify relevant brain areas and connectivity measures for characterizing patients...
September 4, 2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/30233756/asymptomatic-endophthalmitis-following-strabismus-correction-in-a-pediatric-patient
#15
Cory M Pfeifer, Rana M Yazdani
Endophthalmitis is most commonly seen in adults shortly after cataract surgery. It is rare in the pediatric population. Presented here is a case of endophthalmitis following strabismus repair in a 9-month-old patient with Trisomy 21. Leukocoria was observed 15 days after surgery, but the child did not exhibit symptoms of infection, and the ordering clinician requested an MRI of the brain and orbits to assess the possibility of retinoblastoma. This case highlights the importance of MRI in the evaluation of leukocoria and displays typical MRI findings of this infrequently-encountered condition in the pediatric population...
December 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/30222684/incidental-orbital-neuroendocrine-metastases-on-111in-octreoscan-and-mri
#16
Yin Jie Chen, Michael D Farwell
Neuroendocrine tumors have a propensity to metastasize, but rarely to the orbits. A 69-year-old woman with history of neuroendocrine tumor of pancreatic primary underwent routine follow-up In-pentetreotide (OctreoScan) imaging, with 24-hour whole-body planar images showing subtle right periorbital tracer uptake that localized to extraocular muscles on subsequent SPECT/CT. Orbital MRI further defined the location of these highly suspicious orbital metastases, which were treated with external radiation, with follow-up MRI showing decreased size of the orbital metastases...
November 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/30220181/-clinical-analysis-of-orbital-ectopic-meningiomas
#17
X M Huang, D Wang, J Y Lin, D R Tang, F Y Sun
Objective: To investigate the clinical features, imaging features, diagnoses and therapeutic regimens of orbital ectopic meningiomas. Methods: A retrospective study. All the clinical data of 10 patients (10 eyes) with orbital ectopic meningiomas were analyzed retrospectively from August 1999 to October 2016. They included imaging data such as color Doppler ultrasound, CT and MRI, and information of diagnosis, pathology, therapeutic regimen and prognosis. Results: The age of orbital ectopic meningiomas was 7 to 68 years old...
September 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/30212949/primary-poorly-differentiated-lacrimal-gland-adenocarcinoma-in-left-ocular-region-a-rare-case-report
#18
Fan Xia, Wenwu Ling, Jing Zhang, Yifan Zhang, Xuelei Ma
RATIONALE: Primary poorly differentiated lacrimal gland adenocarcinoma in the orbital region is an extremely rare type of neoplasm with only 1 related case in the literature. Its high grade of malignancy makes the timely data reported necessary. Hence, we present an extremely rare disease with biopsy results and recommendations on clinical treatment in an elderly male with Chinese descent. PATIENT CONCERNS: A 66-year-old Chinese man presented with swelling in the left ocular region and eyeball proptosis...
September 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30210106/acute-unilateral-isolated-oculomotor-nerve-palsy-in-an-adult-patient-with-influenza-a
#19
Joe Senda, Kunihiko Araki, Yasushi Tachi, Hazuki Watanabe, Yuichi Kagawashira, Mizuki Ito, Naoki Atsuta, Masahisa Katsuno, Hirohisa Watanabe, Gen Sobue
An otherwise healthy 44-year-old woman exhibited isolated unilateral oculomotor nerve palsy accompanied by an influenza A infection. An intra-orbital MRI scan revealed that her right third intracranial nerve was enlarged and enhanced. She recovered completely during the first month after treatment with oseltamivir phosphate. Although intracranial nerve disorders that result from influenza infections are most frequently reported in children, it is noteworthy that influenza can also cause focal intracranial nerve inflammation with ophthalmoparesis in adults...
September 12, 2018: Internal Medicine
https://www.readbyqxmd.com/read/30209808/retrobulbar-cellulitis-and-abscessation-focus-on-short-and-long-term-concurrent-ophthalmic-diseases-in-41-dogs
#20
M C Fischer, A M Adrian, J Demetriou, P Nelissen, C Busse
OBJECTIVE: To describe concurrent ophthalmic diseases in dogs with retrobulbar cellulitis and abscessation. MATERIALS AND METHODS: Retrospective analysis of clinical records of dogs with retrobulbar inflammation. RESULTS: Forty-one dogs were diagnosed with retrobulbar inflammation; of these, 23 presented with abscessation and two with zygomatic sialoadenitis. Diagnosis was based on orbital ultrasound, MRI, CT and cytological and microbiological examination of fluid or tissue samples...
September 12, 2018: Journal of Small Animal Practice
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