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https://www.readbyqxmd.com/read/28718993/role-of-fdg-pet-mri-fdg-pet-ct-and-dynamic-susceptibility-contrast-perfusion-mri-in-differentiating-radiation-necrosis-from-tumor-recurrence-in-glioblastomas
#1
Mojgan Hojjati, Chaitra Badve, Vasant Garg, Curtis Tatsuoka, Lisa Rogers, Andrew Sloan, Peter Faulhaber, Pablo R Ros, Leo J Wolansky
BACKGROUND AND PURPOSE: To compare the utility of quantitative PET/MRI, dynamic susceptibility contrast (DSC) perfusion MRI (pMRI), and PET/CT in differentiating radiation necrosis (RN) from tumor recurrence (TR) in patients with treated glioblastoma multiforme (GBM). METHODS: The study included 24 patients with GBM treated with surgery, radiotherapy, and temozolomide who presented with progression on imaging follow-up. All patients underwent PET/MRI and pMRI during a single examination...
July 18, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28718304/the-role-of-surgery-in-low-grade-gliomas-do-timing-and-extent-of-resection-matter
#2
Hugues Duffau
Hugues Duffau is a Professor and Chairman of the Neurosurgery Department in the Montpellier University Medical Center and Head of the INSERM 1051 Team "plasticity of the central nervous system, human stem cells and glial tumors" at the Institute for Neurosciences of Montpellier (France). He is an expert in the awake cognitive neurosurgery of slow-growing brain tumors, such as low-grade gliomas, a routine which he has developed since 20 years. His fundamental approach is centered on the concepts of the brain connectomics and neuroplasticity, breaking with the traditional localizationist view of cerebral processing...
July 18, 2017: CNS Oncology
https://www.readbyqxmd.com/read/28717884/serum-concentrations-of-glial-fibrillary-acidic-protein-gfap-do-not-indicate-tumor-recurrence-in-patients-with-glioblastoma
#3
Julia-Mareen Vietheer, Johannes Rieger, Marlies Wagner, Christian Senft, Julia Tichy, Christian Foerch
Recent studies identified serum concentrations of the astroglial protein glial fibrillary acidic protein (GFAP) to be indicative of glioblastoma (GBM) in patients with newly diagnosed space occupying cerebral mass lesions. Until now, no data is available whether GFAP serum concentrations decrease after first therapy and whether GFAP may be used as a predictor of survival and an indicator of tumor recurrence. In this prospective study, we included 44 patients with a single space occupying cerebral mass lesion suspicious for GBM...
July 17, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28717082/post-cytokine-release-salt-wasting-as-inverse-tumor-lysis-syndrome-in-a-non-cerebral-natural-killer-cell-neoplasm
#4
Hirotsugu Ariizumi, Yosuke Sasaki, Hiroshi Harada, Yui Uto, Remi Azuma, Tomohide Isobe, Koji Kishimoto, Eisuke Shiozawa, Masafumi Takimoto, Nobuyuki Ohike, Hiraku Mori
The pathogenesis of cerebral/renal salt-wasting syndrome remains unknown. We herein present a case of salt-wasting syndrome with a natural killer-cell neoplasm without cerebral invasion. A 78-year-old man with hemophagocytic syndrome received two cycles of chemotherapy that did not induce tumor lysis syndrome, but repeatedly caused polyuria and natriuresis. The expression of tumor necrosis factor-α in the neoplasm led us to hypothesize that an oncolysis-induced cytokine storm may have caused renal tubular damage and salt wasting...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28716233/-23-na-mri-reveals-persistent-sodium-accumulation-in-tumefactive-ms-lesions
#5
Konstantin Huhn, Angelika Mennecke, Peter Linz, Franz Tschunko, Nicola Kästle, Armin M Nagel, Michael Uder, Arnd Dörfler, Ralf A Linker, Tobias Engelhorn
BACKGROUND: Chronic inflammatory demyelinating diseases of the CNS typically show a limited lesion size. However, extended lesions may appear with an atypical configuration. Large lesions with a diameter>2cm accompanied by tumor-like edema are entitled "tumefactive" and may occur in multiple sclerosis (MS) and other demyelinating diseases. Historically, differential diagnosis often requires histological analysis. Therefore, advanced imaging techniques are warranted to allow for a precise non-invasive diagnosis...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28712904/pitfalls-in-diagnosis-and-management-of-testicular-choriocarcinoma-metastatic-to-the-brain-report-of-two-cases-and-review-of-literature
#6
REVIEW
Haydn Hoffman, Gentian Toshkezi, Joseph M Fullmer, Walter Hall, Lawrence S Chin
INTRODUCTION: Pure choriocarcinoma of the testes is a rare, aggressive germ cell tumor (GCT) that can metastasize to the brain. Although its prognosis has improved with the development of cisplatin-based chemotherapy regimens, cerebral metastases are prone to hemorrhage and are associated with high morbidity. Here, we present two cases of testicular choriocarcinoma with cerebral metastasis and discuss potential pitfalls in their diagnosis and management. We also review cases in the literature that feature these rare lesions...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28695311/aberrant-paramagnetic-signals-outside-the-tumor-volume-on-routine-surveillance-mri-of-brain-tumor-patients
#7
Shlomit Yust-Katz, Edna Inbar, Natalia Michaeli, Dror Limon, Tali Siegal
Late complications of cerebral radiation therapy (RT) involve vascular injury with acquired cavernous malformation, telangiectasias and damage to vascular walls which are well recognized in children. Its incidence in adults is unknown. Blood products and iron deposition that accompany vascular injury create paramagnetic effects on MRI. This study retrospectively investigated the frequency of paramagnetic lesions on routine surveillance MRI of adult brain tumor patients. MRI studies of 115 brain tumor patients were reviewed...
July 10, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28686121/surgical-and-molecular-considerations-in-the-treatment-of-pediatric-thalamopeduncular-tumors
#8
Ryan P Lee, Kimberly A Foster, Jock C Lillard, Paul Klimo, David W Ellison, Brent Orr, Frederick A Boop
OBJECTIVE Thalamopeduncular tumors are a group of pediatric low-grade gliomas that arise at the interface of the thalamus and brainstem peduncle. They typically occur within the first 2 decades of life, presenting with progressive spastic hemiparesis. Treatment strategies, including surgical intervention, have varied significantly. The authors present their experience in the treatment of 13 children, ages 2-15 years, with non-neurofibromatosis-related pilocytic astrocytomas located in the thalamopeduncular region...
July 7, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28675562/innate-and-adaptive-immunity-in-human-epilepsies
#9
Jan Bauer, Albert J Becker, Wassim Elyaman, Jukka Peltola, Stephan Rüegg, Maarten J Titulaer, James A Varley, Ettore Beghi
Inflammatory mechanisms have been increasingly implicated in the origin of seizures and epilepsy. These mechanisms are involved in the genesis of encephalitides in which seizures are a common complaint. Experimental and clinical evidence suggests different inflammatory responses in the brains of patients with epilepsy depending on the etiology. In general, activation of both innate and adaptive immunity plays a role in refractory forms of epilepsy. Epilepsies in which seizures develop after infiltration of cells of the adaptive immune system in the central nervous system (CNS) include a broad range of epileptic disorders with different (known or unknown) etiologies...
July 2017: Epilepsia
https://www.readbyqxmd.com/read/28674731/tractography-guides-the-approach-for-resection-of-thalamopeduncular-tumors
#10
Ryan Foley, Frederick Boop
BACKGROUND: Thalamopeduncular tumors arise at the junction of the inferior thalamus and cerebral peduncle, and present with a common clinical syndrome of progressive spastic hemiparesis. METHOD: Formal preoperative magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) were performed. Postoperative MRI was obtained to evaluate the extent of tumor resection. A prospective analysis of clinical outcomes was then conducted by the senior author. CONCLUSIONS: Preoperative tractography is a useful adjunct to surgical planning in tumors that displace motor pathways...
July 3, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28674364/diffuse-cerebral-vasoconstriction-in-a-intravascular-lymphoma-patient-with-a-high-serum-mpo-anca-level
#11
Atsuhiko Sugiyama, Makoto Kobayashi, Ayaka Daizo, Miyako Suzuki, Hirotoshi Kawashima, Shin-Ichiro Kagami, Hiroaki Tanaka, Yoshio Suzuki, Takashi Matsunaga, Satoshi Kuwabara
An 87-year-old woman presented with a 3-month history of fever, edema of the lower legs, and gait disturbance. A laboratory examination revealed high serum levels of myeloperoxidase-specific antineutrophil cytoplasmic antibody (MPO-ANCA). Although microscopic polyangiitis was initially suspected and treated, the patient subsequently developed transient hemiparesis and disturbed consciousness. Brain magnetic resonance imaging/angiography revealed infarct-like lesions, pachymeningeal involvement, and diffuse cerebral vasoconstriction...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28672984/biliverdin-administration-ameliorates-cerebral-ischemia-reperfusion-injury-in-rats-and-is-associated-with-proinflammatory-factor-downregulation
#12
Jun-Jie Li, Zhi-Yao Zou, Jia Liu, Liu-Lin Xiong, Hai-Yan Jiang, Ting-Hua Wang, Jian-Lin Shao
Biliverdin (BV), one of the heme oxygenase-1 (HO-1) catalytic products, has been demonstrated to have protective effects in liver ischemia reperfusion injury (IRI). The present study aimed to explore the effects of BV on cerebral IRI, and to investigate the potential mechanisms thereof. Adult male SD rats, weighing 200-240 g, were randomly divided into sham (group S), cerebral ischemia reperfusion control (group C) and BV (group BV) groups. Rats in group C underwent transient middle cerebral artery occlusion (tMCAO) and received 2 ml normal saline; rats in group BV received BV (35 mg/kg) intraperitoneally 15 min prior to reperfusion and 4 h after reperfusion, then twice a day thereafter for 5 days...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28670166/splenial-lesions-of-the-corpus-callosum-disease-spectrum-and-mri-findings
#13
Sung Eun Park, Dae Seob Choi, Hwa Seon Shin, Hye Jin Baek, Ho Cheol Choi, Ji Eun Kim, Hye Young Choi, Mi Jung Park
The corpus callosum (CC) is the largest white matter structure in the brain, consisting of more than 200-250 million axons that provide a large connection mainly between homologous cerebral cortical areas in mirror image sites. The posterior end of the CC is the thickest part, which is called the splenium. Various diseases including congenital to acquired lesions including congenital anomalies, traumatic lesions, ischemic diseases, tumors, metabolic, toxic, degenerative, and demyelinating diseases, can involve the splenium of the CC and their clinical symptoms and signs are also variable...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28668949/naringin-reverses-neurobehavioral-and-biochemical-alterations-in-intracerebroventricular-collagenase-induced-intracerebral-hemorrhage-in-rats
#14
Navdeep Singh, Yashika Bansal, Ranjana Bhandari, Lovish Marwaha, Raghunath Singh, Kanwaljit Chopra, Anurag Kuhad
Intracerebral hemorrhage (ICH) contributes to 10-15% of all strokes and is a high risk factor for morbidity and mortality as compared to other subtypes of stroke, that is, cerebral ischemia and subarachnoid hemorrhage. Oxidative stress (OS)-induced neuroinflammation and neuronal cell death contribute towards the hallmarks of ICH. Spared antioxidant levels, increased inflammatory cytokines and free radicals in ICH lead to neuronal death and exaggerate the hallmarks of ICH. Intracerebroventricular (ICV) collagenase (COL-induced neuronal cell damage and cognitive deficits form a widely recognized experimental model for ICH...
July 1, 2017: Pharmacology
https://www.readbyqxmd.com/read/28668867/radiosurgery-with-a-rotating-gamma-system-a-very-effective-treatment-for-symptomatic-cerebral-cavernomas
#15
Pham Cam Phuong, Nguyen Duc Luan, Vo Thi Huyen Trang, Steven E Schild, Dirk Rades, Mai Trong Khoa
AIM: To evaluate the value of radiosurgery with a rotating gamma-system (RGS) for cerebral cavernomas. PATIENTS AND METHODS: Seventy-nine patients with symptomatic cerebral cavernomas underwent RGS radiosurgery at the Bach Mai Hospital, Hanoi, Vietnam. Median dose (single fraction) was 20 Gy (range=14-26 Gy). Endpoints included effect on headache, seizures and tumor size. RESULTS: Of 60 patients with headache, 17% had complete response, 82% partial response and 2% stable disease (best response)...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28663738/cerebral-microstructural-alterations-after-radiation-therapy-in-high-grade-glioma-a-diffusion-tensor-imaging-based-study
#16
Rebecca Kassubek, Martin Gorges, Mike-Andrew Westhoff, Albert C Ludolph, Jan Kassubek, Hans-Peter Müller
OBJECTIVE: To investigate radiation therapy-induced microstructural damage of white matter in patients with high-grade glioma by diffusion tensor imaging (DTI). METHODS: DTI was performed in 18 patients with high-grade glioma (WHO grades III and IV) and 13 healthy controls. DTI images were cross-sectionally aligned for the calculation of baseline fractional anisotropy (FA). Interhemispheric FA values in patients with high-grade glioma before or without brain radiation therapy were compared with the interhemispheric FA values in patients after radiation therapy and in healthy controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28663612/dexmedetomidine-as-an-anesthetic-adjuvant-in-intracranial-surgery
#17
Ankita Batra, Reetu Verma, V K Bhatia, Girish Chandra, Shashi Bhushan
BACKGROUND: The basic principle of neuroanesthesia is to provide hemodynamic stability, provision of optimal operative conditions, maintenance of cerebral perfusion pressure, and cerebral oxygenation. AIM: This study was undertaken to see the effect of dexmedetomidine infusion on hemodynamics and its ability to act as an anesthetic adjuvant in patients undergoing supratentorial tumor surgery. SETTING AND DESIGN: Prospective randomized control double blind study...
April 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28663065/potential-therapeutic-and-protective-effect-of-curcumin-against-stroke-in-the-male-albino-stroke-induced-model-rats
#18
Yuanyuan Zhang, Yi Yan, Yi Cao, Yongtao Yang, Qing Zhao, Rui Jing, Jiayi Hu, Juan Bao
AIMS: The present study was carried out to understand the therapeutic effect of curcumin (CUR) against stroke in the experimental animal model. The study investigates the healing effect of CUR on mitochondrial dysfunction and inflammation. MATERIALS AND METHODS: Male albino, Wistar strain rats were used for the induction of middle cerebral artery occlusion (MCAO), and reperfusion. Enzyme-linked immunosorbent assay (ELISA) was used for the determination of interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF-α) in the brain region...
June 26, 2017: Life Sciences
https://www.readbyqxmd.com/read/28660317/ischemic-stroke-after-radiation-therapy-for-pituitary-adenomas-a-systematic-review
#19
REVIEW
A van Westrhenen, I S Muskens, J J C Verhoeff, T R S Smith, M L D Broekman
Radiation therapy is widely used for the treatment of residual and recurrent pituitary adenomas and proved to effectively control tumor growth. However, it is suggested that this treatment might result in an increased risk of ischemic stroke. This review aims to evaluate the radiotherapy-related risk of stroke in pituitary adenoma patients. PubMed and Embase databases were systematically searched for current literature on ischemic stroke risk after radiotherapy in pituitary adenoma, in accordance with the PRISMA statement...
June 28, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28660218/diagnosis-of-brain-tumors-using-amino-acid-transport-pet-imaging-with-18-f-fluciclovine-a-comparative-study-with-l-methyl-11-c-methionine-pet-imaging
#20
Naohiro Tsuyuguchi, Yuzo Terakawa, Takehiro Uda, Kosuke Nakajo, Yonehiro Kanemura
OBJECTIVES: (18)F-fluciclovine (trans-1-amino-3-[(18)F] fluorocyclobutanecarboxylic acid, [FACBC]) is an artificial amino acid radiotracer used for positron emission tomography (PET) studies, which is metabolically stable in vivo and has a long half-life. It has already been shown that FACBC-PET is useful for glioma imaging. However, there have been no reports evaluating the efficiency of FACBC-PET in the diagnosis of brain tumors in comparison with other PET tracers in clinical studies...
2017: Asia Oceania Journal of Nuclear Medicine & Biology
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