keyword
MENU ▼
Read by QxMD icon Read
search

fourth ventricle

keyword
https://www.readbyqxmd.com/read/29033643/dandy-walker-malformation-presenting-with-affective-symptoms
#1
Mert Batmaz, Zeynep Ezgi Balçik, Ürün Özer, Burcu Hamurişçi Yalçin, Şakir Özen
Dandy-Walker malformation is defined by enlarged posterior fossa, cystic dilatation of the fourth ventricle, and cerebellar hypoplasia. Although developmental delay and mental retardation are common in Dandy-Walker malformation cases, other comorbid psychiatric conditions have been rarely reported. There are limited numbers of case reports about comorbidity of bipolar disorder with Dandy-Walker malformation in the literature. Herein, a Dandy-Walker malformation case presenting affective symptoms is reported, and psychiatric symptoms which might be seen in this rare malformation are discussed along with diagnosis, treatment, and follow-up processes...
September 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/29027876/intradural-pathology-and-pathophysiology-associated-with-chiari-i-malformation-in-children-and-adults-with-and-without-syringomyelia
#2
Brian J Dlouhy, Jeffrey D Dawson, Arnold H Menezes
OBJECTIVE The pathophysiology underlying tonsillar herniation and CSF obstruction in Chiari malformation Type I (CM-I) is unclear, and the cause of CM-I-associated syringomyelia is not well understood. A better understanding of this pathophysiology is important for an improved treatment strategy. Therefore, the authors sought to identify, characterize, and examine the intradural pathology and CSF flow pathophysiology in the posterior fossa and at the level of the foramen magnum that occurs in the setting of CM-I...
October 13, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29026668/fourth-ventricle-neurocysticercosis-rigid-endoscopic-management-description-of-direct-transcerebellar-approach
#3
A Ceja-Espinosa, J A Franco-Jiménez, A Sosa-Nájera, G A Gutiérrez-Aceves, M I Ruiz-Flores
BACKGROUND: Endoscopy has gained a crucial role in high specialty neurosurgery during the last decades. At present, there are well-defined flexible neuroendoscopic procedures to treat ventricular and subarachnoid space pathologies. Neurocysticercosis is recognized as a common cause of neurologic disease in developing countries and the United States. Surgical intervention, especially cerebrospinal fluid diversion, is the key for management of hydrocephalus. In 2002, a consensus suggested that ventricular forms should be treated with endoscopy as the first option...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28994317/isolated-cervical-anterior-spinal-artery-aneurysm-case-report
#4
Yam Bahadur Roka
Isolated cervical anterior spinal artery (CASA) aneurysms are extremely rare with most of them mostly associated with arteriovenous malformation. The underlying pathology is not known but some factors leading to the aneurysm are inflammatory, infection and connective tissue disorders. Trauma with formation of pseudoaneurysm has also been reported. We report a case which presented with fourth ventricle bleed and was managed successfully with conservative treatment.
October 10, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28977976/clinical-features-and-prognosis-for-intraventricular-liponeurocytoma
#5
Nini Xu, Jinxiu Cai, Jiang Du, Rong Yang, Huachen Zhu, Peiyi Gao, Jian Zhou, Xiaofeng Li
Cerebellar liponeurocytoma is a rare central nervous system tumor, we investigate its biological behaviors and clinical prognosis to improve the understanding of this tumor. We retrospectively analyzed the clinical, radiological and histopathological findings as well as follow-up data of two patients with intraventricular liponeurocytomas in Beijing Tiantan Hospital between July 2000 and July 2016. The main clinical manifestations of the two patients were headache. The supratentorial intraventricular liponeurocytoma appeared as isodense to slight hyperdense on CT scan and heterogeneous intensity on T1-weighted imaging (T1WI) and T2-weighted imaging (T2WI)...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28942513/loco-regional-extensions-of-central-nervous-system-germ-cell-tumors-a-retrospective-radiological-analysis-of-100-patients
#6
Loïc Duron, Flavie Sadones, Philippe Thiesse, Cécile Cellier, Claire Alapetite, François Doz, Didier Frappaz, Hervé J Brisse
PURPOSE: The current staging system of central nervous system (CNS) germ cell tumors (GCT) includes a binary classification in "localized" or "metastatic" disease based on the absence or presence of leptomeningeal dissemination. Loco-regional tumor dissemination has been barely described whereas its accurate definition might be useful in terms of prognosis and treatment, especially for radiation therapy planning. Our purpose was therefore to describe MR patterns and prevalence of loco-regional extensions of these tumors...
September 23, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28936068/hydrocephalus-associated-with-large-vestibular-schwannoma-management-options-and-factors-predicting-requirement-of-cerebrospinal-fluid-diversion-after-primary-surgery
#7
A R Prabhuraj, Nishanth Sadashiva, Santhosh Kumar, Dhaval Shukla, Dhananjaya Bhat, Bhagavatula Indira Devi, Sampath Somanna
OBJECTIVE: Obstructive hydrocephalus (HCP) related to vestibular schwannoma occurs in large tumors compressing the fourth ventricle. Symptoms related to HCP are expected to alleviate after resection of the tumor and decompression of the cerebrospinal fluid (CSF) pathways. However, some patients may require permanent cerebrospinal diversion even after surgery due to persistent HCP. In this study, the authors try to find out the factors associated with the requirement of CSF diversion after vestibular schwannoma surgery in cases of persistent HCP...
August 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28927218/endoscopic-assisted-median-aperture-approach-for-resection-of-fourth-ventricular-tumor-and-confirmation-of-patency-of-cerebral-aqueduct-using-an-adjustable-angle-endoscope-technical-case-report
#8
Ryan Austerman, Joshua Lucas, Alexandra Kammen, Gabriel Zada
BACKGROUND AND IMPORTANCE: Open microsurgical approaches to the roof of the fourth ventricle via a telovelar approach typically require cerebellar retraction and/or splitting of the vermis and may be associated with postoperative neurological morbidities. In this case report and technical note, we describe the use of an adjustable-angle endoscope inserted into the median aperture via suboccipital craniotomy, resulting in enhanced visualization of the roof of the fourth ventricle and cerebral aqueduct and maximal safe tumor resection...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28904578/rosette-forming-glioneuronal-tumor-a-rare-posterior-fossa-tumor-in-an-adolescent
#9
Goutam Bera, Amitabha Das, Sandip Chatterjee, Uttara Chatterjee
Rosette-forming glioneuronal tumor (RGNT) is a rare variety of slow growing mixed glioneuronal tumor involving primarily fourth ventricular region and occurring predominantly in young adults. We present a case of a 16-year-old boy who presented with dizziness and occipital headache. On radiological evaluation, a fairly large hypodense posterior fossa mass lesion in relation to the left side of the vermis, with a large cystic component was found. Surgical resection of the tumor was performed. Histopathological examination showed a biphasic tumor composed of bland neurocytic cells, arranged in the form of neurocytic rosettes along with glial areas resembling low-grade glioma...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28890044/recursive-partitioning-analysis-for-disease-progression-in-adult-intracranial-ependymoma-patients
#10
Sang Woo Song, Yun-Sik Dho, Jin Wook Kim, Yong Hwy Kim, Sun Ha Paek, Dong Gyu Kim, Hee-Won Jung, Sung-Hye Park, Seung Hong Choi, Tae Min Kim, Soon-Tae Lee, Il Han Kim, Sang Hyung Lee, Chul-Kee Park
Intracranial ependymomas are rare tumors in adults. Although recent advancements from demographic, clinical, and biological studies provide new perspectives on this rare tumor, they are not yet widely applied in clinical practice. Currently, most ependymoma patients are treated in the same way: via surgical resection with adjuvant radiation therapy. However, it is reasonable to apply more aggressive treatment for high-risk patients. From this point of view, we performed a study to investigate risk grouping for disease progression of intracranial ependymomas in adults...
September 7, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28875113/fully-endoscopic-minimally-invasive-transrectus-capitis-posterior-muscle-triangle-approach-to-the-posterolateral-condyle-and-jugular-tubercle
#11
Wang Mingdong, Juan C Fernandez-Miranda, Roger Neves Mathias, Eric Wang, Paul Gardner, Hong Wang
Background  We evaluated a transrectus capitis posterior muscle triangle approach to the posterolateral foramen magnum, occipital condyles, jugular tubercle, and the fourth ventricle. We also assessed factors that affect the amount of bone removal required. Objective  To evaluate if the proposed approach is as effective as standard open approaches to expose the lateral portion of the foramen magnum. Methods  The proposed minimally invasive fully endoscopic approach was performed in 15 cadaveric specimens using 4-mm (0- and 45-degree) endoscopes...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28864080/developing-the-brain-early-illustrations-of-cerebral-cortex-and-its-gyri
#12
Harry Sutherland-Foggio
BACKGROUND: Throughout the Middle Ages, most representations of the brain amounted to highly schematized ventricles housed within abstract squiggles of neural tissue. The works by the pre-eminent Flemish anatomist Andreas Vesalius in his De Humani Corporis Fabrica (1543) added considerably more accuracy and detail-still, his drawings of cerebral hemispheres do not exhibit the gyral-sulcal pattern recognized today. Identifiable cortical landmarks would not be featured in print until Cerebri Anatome (1664) by the English physician Thomas Willis...
July 10, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28842236/treatment-of-syringomyelia-in-patients-with-arachnoiditis-at-the-cranio-cervical-junction
#13
Christopher L Davidoff, Shinuo Liu, Johnny H Y Wong, Stavros Koustais, Jeffrey M Rogers, Marcus A Stoodley
OBJECTIVE: Cranio-cervical junction arachnoiditis (CCJA) is an uncommon cause of syringomyelia. The pathophysiology of syrinx formation is uncertain and the appropriate management unclear. A series of cases is reported to demonstrate variations in etiology, uniformity of functional CSF obstruction at the foramen magnum, and results of surgical intervention. METHODS: We retrospectively analyzed the clinical and radiological features of a consecutive series of patients treated for syringomyelia related to CCJA...
August 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28835572/time-spatial-labeling-inversion-pulse-time-slip-with-pencil-beam-pulse-a-selective-labeling-technique-for-observing-cerebrospinal-fluid-flow-dynamics
#14
Shuhei Shibukawa, Tosiaki Miyati, Tetsu Niwa, Mitsunori Matsumae, Tetsuo Ogino, Tomohiko Horie, Yutaka Imai, Isao Muro
We assessed labeling region selectivity on time-spatial labeling inversion pulse (Time-SLIP) with pencil beam pulse (PB Time-SLIP) for the use of visualizing cerebrospinal fluid (CSF) flow dynamics. We compared the selectivity of labeling to the third and fourth ventricles between PB Time-SLIP and conventional Time-SLIP (cTime-SLIP) in eight volunteers and one patient using a 1.5T magnetic resonance imaging (MRI). PB Time-SLIP provided more selective labeling in CSF than cTime-SLIP, particularly in complex anatomical regions...
August 24, 2017: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28832173/-radiation-necrosis-in-the-upper-cervical-spinal-cord-in-a-patient-treated-with-proton-therapy-after-radical-resection-of-the-fourth-ventricle-ependymoma
#15
J Mraček, J Mork, T Svoboda, J Ferda, V Přibáň
BACKGROUND: Radiation necrosis in eloquent areas of the central nervous system (CNS) is one of the most serious forms of toxicity from radiation therapy. The occurrence of radiation necrosis in the CNS is described in a wide range of 3 months to 13 years after radiation therapy. The incidence of this complication covers a wide range of 3-47%. The potential advantage of proton therapy is the ability to reduce dose to normal tissue and escalate tumor dose. Proton beams enter and pass through the tissue with minimal dose deposition until they reach the end of their paths, where the peak of dose, known as the Bragg peak, occurs...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28826709/rosette-forming-glioneuronal-tumor-of-the-fourth-ventricle-in-children-case-report-and-literature-review
#16
Cynthia Morris, Zachary D Prudowsky, Vilaas Shetty, Thomas Geller, Samer K Elbabaa, Miguel Guzman, Mohamed S AbdelBaki
BACKGROUND: Rosette-forming glioneuronal tumor of the fourth ventricle (RGNT) is a rare World Health Organization (WHO) grade I neoplasm. Gross total resection (GTR) is the treatment of choice, and there is no firm evidence for other treatment options when GTR is not feasible. CASE DESCRIPTION: We describe a case of a 6-year-old boy who, following an initial subtotal resection of his fourth ventricular RGNT, received an individualized chemotherapy protocol with vincristine, etoposide and carboplatin for three cycles...
August 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28804042/four-hand-suction-irrigation-technique-leads-to-gross-total-resection-and-long-term-progression-free-survival-in-fourth-ventricular-ependymoma
#17
Sascha Marx, Ehab El Refaee, Soenke Langner, Henry W S Schroeder
BACKGROUND: Gross total resection is often avoided in posterior fossa ependymoma surgery due to the fear of permanent neurological deficits after operation. However, the extent of resection is a major prognostic factor for progression free and overall survival. The present study evaluates the outcome of posterior fossa ependymoma gross total resection in adult patients using a four-hand suction-irrigation technique at the floor of the fourth ventricle. METHODS: All surgical procedures for posterior fossa ependymomas performed since 2001 in the Department of Neurosurgery, University Medicine Greifswald, were analysed...
August 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28804038/subependymomas-are-low-grade-heterogeneous-glial-neoplasms-defined-by-subventricular-zone-lineage-markers
#18
Randy S D'Amico, Moshe Praver, George J Zanazzi, Zachary Englander, Jennifer S Sims, Jorge L Samanamud, Alfred T Ogden, Paul C McCormick, Neil A Feldstein, Guy M McKhann, Michael B Sisti, Peter Canoll, Jeffrey N Bruce
OBJECTIVE: Subependymomas are infrequent, low-grade gliomas associated with the ventricular system and the spinal cord. Little is known about the origin and natural history of these slow-growing lesions. METHODS: We identified all patients with pathologically proven subependymomas presenting to our institution between 1998 and 2016. We retrospectively reviewed clinical, radiographic, histological, and surgical outcomes data in all patients who underwent surgical resection...
August 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28798531/a-choroid-plexus-cyst-in-the-fourth-ventricle-of-a-sprague-dawley-rat
#19
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
#20
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
keyword
keyword
104528
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"