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Ommaya

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https://www.readbyqxmd.com/read/30305449/intrathecal-treatment-trial-of-rituximab-in-progressive-ms-an-open-label-phase-1b-study
#1
Joakim Bergman, Joachim Burman, Jonathan D Gilthorpe, Henrik Zetterberg, Elena Jiltsova, Tommy Bergenheim, Anders Svenningsson
OBJECTIVES: To perform a phase 1b assessment of the safety and feasibility of intrathecally delivered rituximab as a treatment for progressive multiple sclerosis (PMS) and to evaluate the effect of treatment on disability and CSF biomarkers during a 1-year follow-up period. METHODS: Three doses of rituximab (25 mg with a 1-week interval) were administered in 23 patients with PMS via a ventricular catheter inserted into the right frontal horn and connected to a subcutaneous Ommaya reservoir...
October 10, 2018: Neurology
https://www.readbyqxmd.com/read/30286250/lower-body-negative-pressure-to-safely-reduce-intracranial-pressure
#2
Lonnie G Petersen, Justin S Lawley, Alexander Lilja-Cyron, Johan Cg Petersen, Erin J Howden, Satyam Sarma, William K Cornwell, Rong Zhang, Louis A Whitworth, Michael A Williams, Marianne Juhler, Benjamin D Levine
KEY POINTS: During long-term missions, some astronauts experience structural and functional changes of the eyes and brain which resemble signs/symptoms experienced by patients with intracranial hypertension. Weightlessness prevents the normal cerebral volume and pressure "unloading" associated with upright postures on Earth, which may be part of the cerebral and ocular pathophysiology. By placing the lower body in a negative pressure device (LBNP) that pulls fluid away from cranial compartments, we simulated effects of gravity and significantly lowered pressure within the brain parenchyma and ventricle compartments...
October 4, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/30283549/-scedosporium-apiospermum-an-emerging-fatal-cause-of-fungal-abscess-and-ventriculitis-after-near-drowning
#3
Min-Gi Lee, Jin-Gyu Choi, Byung-Chul Son
Herein, we describe a fatal case of central nervous system (CNS) pseudallescheriasis following near-drowning. A 13-year-old boy, who had been successfully resuscitated after near-drowning, presented with a transient episode of mental confusion during a hospital stay after recovering from severe aspiration pneumonia and respiratory failure. A magnetic resonance imaging (MRI) scan of the brain showed a small brain abscess in the left basal ganglia and ventriculitis in the left lateral ventricle. The brain abscess and ventriculitis did not respond to 4 weeks of antibiotic treatment and appeared even worse on a follow-up MRI...
July 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/30283515/gravity-guided-stereotactic-brain-biopsy
#4
Albert Sii-Hieng Wong, Vincent Boon-Hean Chen
Introduction: This study describes a technique using gravity for guidance in stereotactic brain biopsy. This will be especially useful in hospitals where the stereotactic equipment is unavailable. Objectives: The aim of this study is to describe the technique, develop a formula to define its limits of accuracy, and report on its clinical application. Methods: Using the positioning laser grid lines on the computed tomography scanner, a small metallic marker is placed on the scalp at the intended biopsy site...
July 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/30196661/a-novel-implantable-cerebrospinal-fluid-reservoir-a-pilot-study
#5
Yoon Hwan Byun, Ho Shin Gwak, Ji-Woong Kwon, Kwang Gi Kim, Sang Hoon Shin, Seung Hoon Lee, Heon Yoo
OBJECTIVE: The purpose of this pilot study was to examine the safety and function of the newly developed cerebrospinal fluid (CSF) reservoir called the V-Port. METHODS: The newly developed V-Port consists of a non-collapsible reservoir outlined with a titanium cage and a connector for the ventricular catheter to be assembled. It is designed to be better palpated and more durable to multiple punctures than the Ommaya reservoir. A total of nine patients diagnosed with leptomeningeal carcinomatosis were selected for V-Port insertion...
September 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/30192215/tumor-dissemination-through-surgical-tracts-in-diffuse-intrinsic-pontine-glioma
#6
Maria-Jesus Lobon-Iglesias, Vicente Santa-Maria Lopez, Patricia Puerta Roldan, Santiago Candela-Cantó, Monica Ramos-Albiac, Marta Gomez-Chiari, Stephanie Puget, Stephanie Bolle, Liliana Goumnerova, Mark W Kieran, Ofelia Cruz, Jacques Grill, Andres Morales La Madrid
OBJECTIVE Diffuse intrinsic pontine glioma (DIPG) is a highly aggressive and lethal brainstem tumor in children. In the 1980s, routine biopsy at presentation was abandoned since it was claimed "unnecessary" for diagnosis. In the last decade, however, several groups have reincorporated this procedure as standard of care or in the context of clinical trials. Expert neurosurgical teams report no mortality and acceptable morbidity, and no relevant complications have been previously described. The aim of this study was to review needle tract dissemination as a potential complication in DIPG...
September 7, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/30142312/erucic-acid-a-component-of-lorenzo-s-oil-and-ppar-%C3%AE-ligand-modifies-c6-glioma-growth-and-toxicity-of-doxorubicin-experimental-data-and-a-comprehensive-literature-analysis
#7
Meric A Altinoz, Ayhan Bilir, İlhan Elmaci
BACKGROUND: PPAR-δ is a transcription factor which has crucial roles in stimulating oligodendroglial differentiation and myelination and its activation was also shown to differentiate malignant C6 glioma cells into oligodendrocytes. OBJECTIVE: One of the ligands of PPAR-δ is erucic acid (EA), an edible omega-9 fatty acid consumed more by Asian populations and exists highly in Chinese womens milk. There exist epidemiological evidence that pediatric brain tumor incidence is among the lowest in the Chinese population...
October 1, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/30127571/exteriorisation-of-the-ommaya-reservoir-secondary-to-wound-dehiscence-in-a-case-of-all
#8
Uday Yanamandra, Eshita Raju, Rajan Kapoor, Suman Pramanik, Ankur Ahuja, Tathagata Chatterjee, Satyaranjan Das
No abstract text is available yet for this article.
July 2018: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29850985/the-use-of-ommaya-reservoirs-to-deliver-central-nervous-system-directed-chemotherapy-in-childhood-acute-lymphoblastic-leukaemia
#9
REVIEW
Ruairi Wilson, Caroline Osborne, Christina Halsey
Prophylactic eradication of central nervous system (CNS) leukaemia is the current standard of care in treating childhood acute lymphoblastic leukaemia (ALL). This is conventionally achieved through regular lumbar punctures with intrathecal injections of methotrexate into the cerebrospinal fluid (CSF). Ommaya reservoirs are subcutaneous implantable devices that provide a secure route of drug delivery into the CSF via an intraventricular catheter. They are an important alternative in cases where intrathecal injection via lumbar puncture is difficult...
August 2018: Paediatric Drugs
https://www.readbyqxmd.com/read/29572169/surgical-management-of-adverse-radiation-effects-after-gamma-knife-radiosurgery-for-cerebral-arteriovenous-malformations-a-population-based-cohort-study
#10
Pietro Meneghelli, Alberto Pasqualin, Piergiuseppe Zampieri, Michele Longhi, Roberto Foroni, Antonio Sini, Nicola Tommasi, Antonio Nicolato
OBJECTIVE: The goal of this study is to report our experience in the surgical treatment of cerebral arteriovenous malformations (cAVMs) related permanent symptomatic adverse radiation effects (PSAREs), to clarify an appropriate surgical management and to identify the risk factors related to their development. METHODS: We evaluated 549 patients treated with Gamma Knife radiosurgery (GKRS) for cAVMs with a follow-up of at least 8 years. Univariate and multivariate analyses were used to test different risk factors related to the development of PSARE...
June 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29492136/adult-supratentorial-extraventricular-anaplastic-ependymoma-therapeutic-approach-and-clinical-review
#11
José Pedro Lavrador, Edson Oliveira, Joaquim Cruz Teixeira, José Pedro Lopes, José Pimentel, Manuel Herculano Carvalho
We report a 69-year-old patient with left paresthesia and hemiparesis. Magnetic resonance imaging revealed a right frontoparietal cystic tumor. A subtotal surgical resection was performed, and an Ommaya reservoir was left in place. The pathological diagnosis was supratentorial extraventricular anaplastic ependymoma. Radiation therapy was administered, and Ommaya reservoir drainages were performed. Four months after, her clinical status deteriorated after a reservoir drainage and image revealed an acute hemorrhage...
January 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29387478/retrospective-review-of-metastatic-melanoma-patients-with-leptomeningeal-disease-treated-with-intrathecal-interleukin-2
#12
Isabella C Glitza, Michelle Rohlfs, Nandita Guha-Thakurta, Roland L Bassett, Chantale Bernatchez, Adi Diab, Scott E Woodman, Cassian Yee, Rodabe N Amaria, Sapna P Patel, Hussein Tawbi, Michael Wong, Wen-Jen Hwu, Patrick Hwu, Amy Heimberger, Ian E McCutcheon, Nicholas Papadopoulos, Michael A Davies
Objectives: Metastatic melanoma patients with leptomeningeal disease (LMD) have an extremely poor prognosis, with a median survival measured in weeks, and few treatment options. Outcomes of a retrospective cohort of patients with LMD that were treated with intrathecal interleukin-2 (IT IL-2) were reviewed to assess the long-term efficacy of this therapy. Methods: The records of metastatic melanoma patients with LMD who were treated with IT IL-2 from 2006 to 2014 in a Compassionate Investigational New Drug study were reviewed...
2018: ESMO Open
https://www.readbyqxmd.com/read/29322340/the-use-of-a-smartphone-assisted-ventricle-catheter-guide-for-ommaya-reservoir-placement-experience-of-a-retrospective-bi-center-study
#13
Sergey Ozerov, U W Thomale, M Schulz, A Schaumann, A Samarin, E Kumirova
BACKGROUND: For intraventricular chemotherapy (IVC) as part of many oncological treatment protocols, Ommaya reservoir is enabling repeated access to the cerebro-spinal fluid (CSF). The correct placement of the catheter in the ventricle is essential for correct application of drugs, which is enabled by sophisticated techniques such as neuronavigation. OBJECTIVE: In a bi-center retrospective study, we reviewed our experience using a smartphone-assisted ventricle catheter guide as simple solution for correct Ommaya reservoir placement...
May 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29305723/image-guided-ommaya-reservoir-insertion-for-intraventricular-chemotherapy-a-retrospective-series
#14
Jonathan C Lau, Suzanne E Kosteniuk, David R Macdonald, Joseph F Megyesi
BACKGROUND: Ayub Ommaya proposed a surgical technique for subcutaneous reservoir and pump placement in 1963 to allow access to intraventricular cerebrospinal fluid (CSF). Currently, the most common indication for Ommaya reservoir insertion (ORI) in adults is for patients with hematologic or leptomeningeal disorders requiring repeated injection of chemotherapy into the CSF space. Historically, the intraventricular catheter has been inserted blindly based on anatomical landmarks. The purpose of this study was to examine short-term complication rates with ORI with image guidance (IG) and without image guidance (non-IG)...
March 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29189615/multimodal-treatment-of-rhinocerebral-mucormycosis-in-a-pediatric-patient-with-relapsed-pre-b-acute-lymphoblastic-leukemia
#15
Zephyr D Dworsky, John S Bradley, Matthew T Brigger, Alice L Pong, Dennis John Kuo
A 17-year-old girl developed invasive rhinocerebral mucormycosis during intensive re-induction chemotherapy for relapsed pre-B acute lymphoblastic leukemia. Due to the high case fatality rate for invasive mucormycosis in profoundly immunosuppressed patients, an aggressive treatment regimen was pursued. In addition to the standard of care treatments with intravenous amphotericin and aggressive surgical debridements, she received intraventricular amphotericin to the brain via an Ommaya reservoir, hyperbaric oxygen treatments, filgrastim, intravenous immunoglobulin and antifungal in vitro synergy testing to allow for more targeted antifungal therapy with the addition of micafungin...
June 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28944129/endoscopic-assisted-ommaya-reservoir-placement-technical-note
#16
Jessica Lane, Brad E Zacharia
Ommaya reservoir placement has been an option for patients requiring cerebrospinal fluid (CSF) access since the 1960s. It is preferred to repeat lumbar punctures, both in terms of patient comfort and the consistency of intrathecal drug concentration. Technological developments have advanced the placement technique, allowing for better accuracy and reduced complications. Freehand placement was first augmented with pneumoencephalograms and intraoperative computerized tomography (CT), then with optical-based navigation, and finally by utilizing electromagnetic neuronavigation...
July 19, 2017: Curēus
https://www.readbyqxmd.com/read/28842304/establishment-of-a-rhesus-monkey-model-of-chronic-temporal-lobe-epilepsy-using-repetitive-unilateral-intra-amygdala-kainic-acid-injections
#17
Yajie Chi, Bolin Wu, Jianwei Guan, Kuntai Xiao, Ziming Lu, Xiao Li, Yuting Xu, Shan Xue, Qiang Xu, Junhua Rao, Yanwu Guo
OBJECTIVE: Temporal lobe epilepsy (TLE) is a common type of acquired epilepsy refractory to medical treatment. As such, establishing animal models of this disease is critical to developing new and effective treatment modalities. Because of their small head size, rodents are not suitable for comprehensive electroencephalography (EEG) evaluation via scalp or subdural electrodes. Therefore, a larger primate model that closely recapitulates signs of TLE is needed; here we describe a rhesus monkey model resembling chronic TLE...
September 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28790212/-neuro-endoscopic-surgery-for-multi-lobular-chronic-subdural-hematoma
#18
Toshihito Ishikawa, Katsuhiro Endo, Yuji Endo, Naoki Sato, Mamoru Ohta
BACKGROUND: Chronic subdural hematoma(CSDH)generally occurs in the elderly, and is usually treated by burr-hole craniotomy with closed-system drainage. Treatment of recurrent CSDH is more challenging, especially when the hematoma is multi-lobular. A variety of approaches to the management of multi-lobular CSDH have been described, including evacuation through a wide craniotomy, placement of an Ommaya reservoir, subdural peritoneal shunting, and embolization of the middle meningeal artery...
August 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28752498/pseudoprogression-in-pediatric-low-grade-glioma-after-irradiation
#19
Derek S Tsang, Erin S Murphy, John T Lucas, Pagona Lagiou, Sahaja Acharya, Thomas E Merchant
This study aimed to assess the incidence and management of pseudoprogression after radiation therapy (RT) in patients with pediatric low-grade glioma (LGG). This retrospective review included patients aged 21 years or younger with intracranial LGG treated with curative-intent RT. Pseudoprogression was defined as an increase in tumor size by ≥10% in at least two dimensions between two and three consecutive MR imaging studies. Overall survival (OS) and event-free survival (EFS) were measured from the first day of RT...
November 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28665393/-radiotherapy-and-radiosurgery-in-treatment-of-craniopharyngiomas
#20
REVIEW
A N Savateev, Yu Yu Trunin, N A Mazerkina
Craniopharyngiomas are benign epithelial tumors having a dysembryogenetic origin, which are usually located in the sellar/parasellar and/or third ventricle regions. Gross total resection is the modern standard of treatment for these tumors because of a low recurrence rate. However, this surgery in some patients with craniopharyngioma often leads to the development or worsening of diencephalic disorders poorly responding to treatment. Perhaps, in these cases, subtotal or partial tumor resection or implantation of an Ommaya reservoir into the tumor cyst followed by stereotactic radiotherapy/radiosurgery may provide better functional outcomes and higher life quality in patients, with tumor growth control being reasonable (according to the published data, the mean 10-year disease-free survival is 66...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
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