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https://www.readbyqxmd.com/read/28798531/a-choroid-plexus-cyst-in-the-fourth-ventricle-of-a-sprague-dawley-rat
#1
Atsuko Murai, Kenji Nakamura, Norifumi Takimoto, Kengo Namiki, Daisuke Hibi, Yukihiro Yanagizawa, Koji Shimouchi
Choroid plexus cysts are rare lesions in the brain and are reported in humans and dogs. Herein, we report a choroid plexus cyst found in a 10-week-old female Sprague-Dawley rat. Histologically, a cyst measuring approximately 600 μm in diameter was found in the fourth ventricle of the brain. The cyst was lined with a single layer of flattened cells and was present in the connective tissue of the choroid plexus. Next to the cyst, a dilated tube was found with a similar morphology to the epithelium of the choroid plexus...
July 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28798218/imaging-biomarkers-for-adult-medulloblastomas-genetic-entities-may-be-identified-by-their-mr-imaging-radiophenotype
#2
V C Keil, M Warmuth-Metz, C Reh, S J Enkirch, C Reinert, D Beier, D T W Jones, T Pietsch, H H Schild, E Hattingen, P Hau
BACKGROUND AND PURPOSE: The occurrence of medulloblastomas in adults is rare; nevertheless, these tumors can be subdivided into genetic and histologic entities each having distinct prognoses. This study aimed to identify MR imaging biomarkers to classify these entities and to uncover differences in MR imaging biomarkers identified in pediatric medulloblastomas. MATERIALS AND METHODS: Eligible preoperative MRIs from 28 patients (11 women; 22-53 years of age) of the Multicenter Pilot-study for the Therapy of Medulloblastoma of Adults (NOA-7) cohort were assessed by 3 experienced neuroradiologists...
August 10, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28771697/effects-of-centrally-administered-endocannabinoids-and-opioids-on-orofacial-pain-perception-in-rats
#3
Marek Zubrzycki, Anna Janecka, Andreas Liebold, Mechthild Ziegler, Maria Zubrzycka
BACKGROUND AND PURPOSE: Endocannabinoids and opioids play a vital role in mediating pain-induced analgesia. The specific effects of these compounds within orofacial region are largely unknown. In this study we tried to determine whether the increase of cannabinoid and opioid concentration in cerebrospinal fluid affects impulse transmission between the motor centers localized in the vicinity of the third and fourth cerebral ventricles. EXPERIMENTAL APPROACH: The study objectives were realized on rats using the method allowing to record the amplitude of evoked tongue jerks (ETJ) in response to noxious tooth pulp stimulation...
August 3, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28749028/neuroendodermal-cyst-in-the-fourth-ventricle-of-a-dog
#4
M Kent, E N Glass, A D Miller, A de Lahunta
CASE REPORT: We describe the MRI appearance and surgical outcome of a rare neuroendodermal cyst in the fourth ventricle of a German Shorthaired Pointer. The dog presented with uncoordinated gait and occasional falling that increased when she became excited. The MRI appearance is shown and the surgical treatment described. Recurrence occurred on two occasions and the dog was euthanased. CONCLUSION: Recurrence of these cysts is highly likely unless there is complete surgical resection...
August 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28735671/choroid-plexus-cyst-in-a-neonatal-burmeister-s-porpoise-phocoena-spinipinnis
#5
J Díaz-Delgado, K R Groch, M W Wiegand, E R Secchi, R Réssio, F C C Natália, J L Catão-Dias
Neuroectodermal developmental anomalies are reported rarely in cetaceans and central nervous system cysts are not described. We describe the gross, microscopical, histochemical and immunohistochemical features of a neuraxial myelencephalic cyst in a stranded neonatal Burmeister's porpoise (Phocoena spinipinnis). Grossly, a subdural, extra-axial, well-demarcated, yellow fluid-filled cystic structure (1.9 × 1.6 × 1 cm) expanded the left foramen of Luschka, the left caudolateral cerebellar recess and the left cranioventral myelencephalon...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28721597/neuroendoscopic-management-of-posterior-third-ventricle-ependymoma-with-intraaqueductal-and-fourth-ventricle-extension-a-case-report-and-review-of-the-literature
#6
Ricardo Prat-Acín, Rocío Evangelista, Rebeca Conde, Angel Ayuso-Sacido, Inma Galeano
INTRODUCTION: Posterior third ventricle ependymomas with intraaqueductal extension are relatively infrequent lesions. Its surgical management represents a formidable technical challenge and includes a wide variety of approaches. Minimally invasive surgery including the endoscopic management can play a crucial role to obtain an optimal clinical outcome. PATIENTS AND METHODS: We report the clinical outcome of an 11-year-old female patient with a 6-year history of recurrent episodes of headache and vomiting...
July 18, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28711539/transventricular-migration-of-neurocysticercosis
#7
Abhidha Shah, Ravikiran Vutha, Shilpa Sankhe, Atul Goel
BACKGROUND: The movements of a neurocysticercosis cyst within the ventricular cavity have been identified rarely. CASE DESCRIPTION: A 22-year old male patient presented with the main symptom of diplopia for about a week. Findings of the neurologic examination revealed bilateral sixth cranial nerve weakness. Investigations during the period showed an intraventricular tumor that migrated from lateral ventricle to the third ventricle and subsequently to the fourth ventricle...
July 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28690753/-fourth-ventricule-epidermoid-cyst-about-a-case
#8
Abderrazzak El Saqui, Mohamed Aggouri, Mohamed Benzagmout, Khalid Chakour, Mohamed El Faiz Chaoui
Epidermoid cysts are rare benign tumors developed by ectodermic inclusions. They are usually located at the level of the pontocerebellar angle, the parasellar region and the temporal fossa. They exceptionally develop at the level of the fourth ventricle We report the case of a 47-year old woman admitted for intracranial hypertension syndrome associated with walking disorders. The diagnosis of fourth ventricle epidermoid cyst was evoked based on diffusion MRI data then confirmed intraoperatively and by histologic examination...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28687690/cryptococcal-meningitis-causing-obstructive-hydrocephalus-in-a-patient-on-fingolimod
#9
Chengde Pham, Iwan Bennett, Rondhir Jithoo
Cryptococcosis is a recognised opportunistic infection in immunocompromised patients. The long-term adverse effect profile of fingolimod, an immunomodulating agent approved for use in multiple sclerosis in 2010, is only just emerging. We report the first case to our knowledge of a patient presenting with obstructive hydrocephalus secondary to cryptococcal meningitis in the setting of fingolimod therapy. Extensive posterior fossa leptomeningeal inflammation with associated cerebellar oedema resulted in effacement of the fourth ventricle and obstructive hydrocephalus requiring urgent ventriculostomy...
July 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28676975/a-comprehensive-review-of-the-foramina-of-luschka-history-anatomy-embryology-and-surgery
#10
REVIEW
Jaspreet Johal, Phillip Barrett Paulk, Peter C Oakes, Rod J Oskouian, Marios Loukas, R Shane Tubbs
PURPOSE: The purpose of this review is to comprehensively review the foramina of Luschka in regard to their discovery, embryology, anatomy, and surgical relevance. METHODS: This subject review of the foramina of Luschka was composed after conducting a thorough review of the available literature on this topic using PubMed and other primary sources. RESULTS: The foramina of Luschka are paired apertures located in the lateral recesses of the fourth ventricle, within the posterior cranial fossa...
July 4, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28675887/prenatal-imaging-findings-of-pontine-tegmental-cap-dysplasia-report-of-four-cases
#11
Eléonore Blondiaux, Stéphanie Valence, Stéphanie Friszer, Diana Rodriguez, Lydie Burglen, Hubert Ducou le Pointe, Marie Blouet, Catherine Garel
OBJECTIVES: To describe the prenatal imaging findings in pontine tegmental cap dysplasia (PTCD), a rare congenital malformation of the hindbrain so far reported postnatally only and characterized by a typical appearance of the pons with malformations of the vermis and the cerebellar peduncles. METHODS: This retrospective multicenter study retrieved 4 cases of PTCD over a 10-year period. Prenatal ultrasonography and fetal magnetic resonance imaging (MRI) findings were reviewed and compared to postnatal or postmortem data...
July 5, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28670090/neurocysticercosis-of-the-fourth-ventricle-associated-with-hydrocephalus
#12
Carola Mullins, Jonathan A Muniz, Hugo Sandoval, Osvaldo Padilla, Luis Ramos-Duran
Neurocysticercosis is a parasitic infection of the central nervous system with the cysts of Taenia solium, the pig tapeworm. Infection presents with a pleomorphic picture depending on the stage and location of the infection and the immune response of the infected host. Historically confined to the developing world, neurocysticercosis is no longer limited to endemic regions, as globalization, travel, and immigration permit the spread of the infection. We report a young Hispanic patient who was diagnosed with neurocysticercosis of the fourth ventricle and subsequent hydrocephalus...
July 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28665388/-posterior-decompression-of-the-craniovertebral-junction-in-syringomyelia-combined-with-chiari-1-malformation-in-children
#13
A V Sanakoeva, A E Korshunov, Sh U Kadyrov, E A Khukhlaeva, Yu V Kushel'
OBJECTIVE: to develop the algorithm for defining the amount of posterior decompression of the craniovertebral junction in children with syringomyelia combined with Chiari-1 malformation. MATERIAL AND METHODS: Sixty eight children with syringomyelia and Chiari-1 malformation, under age of 18 years, underwent posterior decompression of the craniovertebral junction (PDCVJ) in the period from January 2001 to June 2016. Seven (10%) patients underwent extradural decompression (EDD), 16 (24%) patients underwent extra-arachnoid duraplasty (EAD), 25 (37%) patients underwent intra-arachnoid dissection (IAD) and duraplasty, and 20 (29%) patients underwent PDCVJ and placement of a fourth ventricle-subarachnoid shunt...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28653564/blake-s-pouch-cyst-in-children-atypical-clinical-presentation
#14
Martina Bontognali, Andrea Poretti, Raphael Guzman, Thierry Agm Huisman, Gian Paolo Ramelli
Blake's pouch cyst is a posterior fossa cystic malformation characterized by a infracerebellar cyst, absence of communication between the fourth ventricle and the subarachnoid space, and tetraventricular hydrocephalus. Children with Blake's pouch cyst typically present with macrocephaly due to hydrocephalus during the neonatal period or infancy. Atypical presentation is, however, possible. Here we present clinical and neuroimaging findings, as well as management and outcome, of an 18-month-old girl with atypical presentation of Blake's pouch cyst characterized by cerebellar ataxia...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28653396/parinaud-syndrome-any-clinicoradiological-correlation
#15
L Pollak, T Zehavi-Dorin, A Eyal, R Milo, R Huna-Baron
INTRODUCTION: The significance of MRI findings of patients with Parinaud syndrome (PS) with respect to clinical characteristics is poorly defined. Over the past decades, all patients with PS undergo magnetic resonance imaging which allows a better identification of the lesion localization. We compared the neuro-ophthalmological findings of patients with PS caused by intrinsic (intra-axial) vs extrinsic (pineal gland tumor) brainstem lesions. METHODS: Medical records of patients with PS evaluated between 2000 and 2016 were retrospectively reviewed...
June 26, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28653235/the-clinical-features-and-surgical-outcomes-of-intracranial-tanycytic-ependymomas-a-single-institutional-experience
#16
Xiaogang Tao, Jinqian Dong, Zonggang Hou, Shuyu Hao, Qi Zhang, Zhen Wu, Junting Zhang, Baiyun Liu
Tanycytic ependymoma is a rare subtybe of ependymoma with a predilection for the spinal cord and intracranial tanycytic ependymoma is thus extremely rare. Most studies on intracranial tanycytic ependymomas included only one or two cases. Here we report nine patients with pathologically confirmed intracranial tanycytic ependymomas. The clinical characteristics, including radiological and histological examination, operative records, and prognoses were reviewed. The case series included six male and three female patients with an average age of 19...
June 26, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28652948/streptococcus-mutans-a-potential-risk-factor-in-recurrent-hemorrhagic-stroke
#17
Tarek R Mansour, Yasaman Alam, Layth Dahbour, Ahmed Alnemari, Mouhammad Jumaa, Jason L Schroeder
Stroke is the fifth leading cause of death and is responsible for approximately nine percent of all deaths worldwide. Cases of Streptococcus mutans (S. mutans)-induced intracerebral hemorrhage as a result of bloodstream infections have seldom been reported. New reports show that bacteria with specific collagen binding proteins (CBPs), such as the Cnm type produced by S. mutans, may inhibit platelet aggregation and cause bleeding. In this article, we report on a 62-year-old man with a recent history of left frontal intracerebral hemorrhage (ICH) who presented to the emergency department after a fall due to suspected seizure while in rehabilitation...
May 19, 2017: Curēus
https://www.readbyqxmd.com/read/28650218/bilateral-surgical-damage-of-the-central-tegmental-tract-resulting-in-bilateral-hypertrophic-olivary-degeneration-an-mri-case-report
#18
Silvia Lana, Chiara Ganazzoli, Girolamo Crisi
Hypertrophic olivary degeneration (HOD) is a rare trans-synaptic neuronal degeneration of the inferior olivary nucleus caused by an injury to the dentato-rubro-olivary connection, also known as Guillain-Mollaret triangle. It leads to hypertrophy of the affected nucleus rather than atrophy and is characterized by hyperintensity on T2-weighted images. Unilateral and bilateral cases are described. We present a case of a 70-year-old patient affected by a tumor inside the fourth ventricle who suffered from diplopia and right seventh cranial nerve palsy...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28643039/primary-intraventricular-meningiomas-in-children-experience-of-two-cases-with-review-of-literature
#19
Kapil D Muley, Salman T Shaikh, Chandrashekhar E Deopujari, Uday B Andar
Meningiomas are rare in the pediatric age group, more so in the intraventricular location. They arise in the lateral ventricles from the arachnoid cells contained within the choroid plexus, in the third ventricle from the velum interpositum and in the fourth ventricle from the choroids. These tumors are usually large and have an aggressive behaviour. Surgical management of intra-ventricular meningiomas is challenging because of their deep location, large size at presentation and increased vascularity. The authors report two such cases who presented with symptoms of raised intra cranial pressure and on evaluation were found to have associated hydrocephalus...
June 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28633540/benign-ependymoma-with-extensive-intracranial-and-spinal-cerebrospinal-fluid-dissemination-case-report-and-literature-review
#20
Fangmei Zhu, Jurong Ding, Yumei Li, Dewang Mao, Xianglei He, Wanyuan Chen, Lin Lou, Zhongxiang Ding
Myxopapillary ependymoma (MPE) is a rare variant of ependymoma that is most commonly located in the cauda equina and filum terminale. We present a case of 23-year-old man diagnosed with MPE in the fourth ventricle and sacral canal area with extensive disseminated lesions along the cerebrospinal ventricular system. Additionally, a molecular pathological diagnosis was performed. The patient underwent a craniotomy and a lumbar laminectomy. In the course of 18 months of follow-up, the patient have recovered very well...
June 21, 2017: British Journal of Neurosurgery
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