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https://www.readbyqxmd.com/read/29725563/clinicoradiological-correlation-of-infarct-patterns-on-diffusion-weighted-magnetic-resonance-imaging-in-stroke
#1
Zainab Hussain, Kiran Hilal, Muhammad Ahmad, Zafar Sajjad, Raza Sayani
Diffusion-weighted magnetic resonance imaging (DW-MRI) represents a major advance in the early diagnosis of acute ischemic stroke. It can detect edema due to ischemia in the brain tissue. It not only establishes the presence and location of ischemic brain injury but also a relatively new concept is the determination of infarct patterns seen on diffusion imaging and its clinical correlation. Objective To determine the frequency of various infarct patterns and their relationship with functional outcome of the patient...
March 2, 2018: Curēus
https://www.readbyqxmd.com/read/29724415/acr-appropriateness-criteria-%C3%A2-orbits-vision-and-visual-loss
#2
Tabassum A Kennedy, Amanda S Corey, Bruno Policeni, Vikas Agarwal, Judah Burns, H Benjamin Harvey, Jenny Hoang, Christopher H Hunt, Amy F Juliano, William Mack, Gul Moonis, Gregory J A Murad, Jeffrey S Pannell, Matthew S Parsons, William J Powers, Jason W Schroeder, Gavin Setzen, Matthew T Whitehead, Julie Bykowski
Visual loss can be the result of an abnormality anywhere along the visual pathway including the globe, optic nerve, optic chiasm, optic tract, thalamus, optic radiations or primary visual cortex. Appropriate imaging analysis of visual loss is facilitated by a compartmental approach that establishes a differential diagnosis on the basis of suspected lesion location and specific clinical features. CT and MRI are the primary imaging modalities used to evaluate patients with visual loss and are often complementary in evaluating these patients...
May 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29721630/characteristic-features-and-proposed-classification-in-69-cases-of-intracranial-microcystic-meningiomas
#3
Zhiqin Lin, Meng Zhao, Xiangrong Li, Junmei Wang, Ping Qiu, Folin Lan, Celin Guan, Dongxia Liao, Dongwei Shen, Jing Lu, Shuanglin Que, Zhongli Jiang
Microcystic meningioma (MM) is a rare subtype of intracranial meningiomas, with clinical and radiologic features not well characterized in the literature. Based on our experience, we propose a classification system of intracranial MMs. We reviewed the medical records, radiographic studies, and operative notes of a group of consecutive patients with intracranial MM. The mean age of the 69 patients was 46.8 ± 10.6 years (range, 21-75 years). Three types of intracranial MMs could be identified. Type 1 MMs presented as a solid lesion, hypointense or isointense on T1WI, hyperintense on T2WI, and homogeneous or heterogeneous enhancement, and were found in 43 patients (67...
May 2, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29688408/spatiotemporal-distribution-of-fibrinogen-in-marmoset-and-human-inflammatory-demyelination
#4
Nathanael J Lee, Seung-Kwon Ha, Pascal Sati, Martina Absinta, Nicholas J Luciano, Jennifer A Lefeuvre, Matthew K Schindler, Emily C Leibovitch, Jae Kyu Ryu, Mark A Petersen, Afonso C Silva, Steven Jacobson, Katerina Akassoglou, Daniel S Reich
Multiple sclerosis is an inflammatory demyelinating disease of the central nervous system. Although it has been extensively studied, the proximate trigger of the immune response remains uncertain. Experimental autoimmune encephalomyelitis in the common marmoset recapitulates many radiological and pathological features of focal multiple sclerosis lesions in the cerebral white matter, unlike traditional experimental autoimmune encephalomyelitis in rodents. This provides an opportunity to investigate how lesions form as well as the relative timing of factors involved in lesion pathogenesis, especially during early stages of the disease...
April 20, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29624154/the-diagnostic-accuracy-of-detecting-malignant-transformation-of-low-grade-glioma-using-o-2-18-f-fluoroethyl-l-tyrosine-positron-emission-tomography-a-retrospective-study
#5
Asma Bashir, Jannick Brennum, Helle Broholm, Ian Law
OBJECTIVE The diagnostic accuracy of O-(2-[18 F]fluoroethyl)-l-tyrosine (FET) PET scanning in detecting the malignant transformation of low-grade gliomas (LGGs) is controversial. In this study, the authors retrospectively assessed the diagnostic potential of FET PET in patients with MRI-suspected malignant progression of LGGs that had previously been treated and the relationship between FET uptake and MRI and molecular biomarkers. METHODS Forty-two patients who had previously undergone surgical or multimodal treatment for a histologically verified LGG were referred for FET PET assessment because of clinical signs and/or MRI findings suggestive of tumor progression...
April 6, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29618666/peptide-vaccine-immunotherapy-biomarkers-and-response-patterns-in-pediatric-gliomas
#6
Sören Müller, Sameer Agnihotri, Karsen E Shoger, Max I Myers, Nicholas Smith, Srilakshmi Chaparala, Clarence R Villanueva, Ansuman Chattopadhyay, Adrian V Lee, Lisa H Butterfield, Aaron Diaz, Hideho Okada, Ian F Pollack, Gary Kohanbash
Low-grade gliomas (LGGs) are the most common brain tumor affecting children. We recently reported an early phase clinical trial of a peptide-based vaccine, which elicited consistent antigen-specific T cell responses in pediatric LGG patients. Additionally, we observed radiologic responses of stable disease (SD), partial response (PR), and near-complete/complete response (CR) following therapy. To identify biomarkers of clinical response in peripheral blood, we performed RNA sequencing on PBMC samples collected at multiple time points...
April 5, 2018: JCI Insight
https://www.readbyqxmd.com/read/29614360/effectiveness-of-stereotactic-radiotherapy-and-bevacizumab-for-recurrent-high-grade-gliomas-a-potential-therapy-for-idh-wild-type-recurrent-high-grade-gliomas
#7
Takayuki Yasuda, Yoshihiro Muragaki, Masayuki Nitta, Kazunari Miyamoto, Yuko Oura, Takuo Henmi, Sanshiro Noguchi, Hideaki Oda, Taiichi Saito, Takashi Maruyama, Shoko Atsuchi, Naohisa Miura, Takakazu Kawamata
OBJECT: This study aimed to evaluate the efficacy of stereotactic radiotherapy combined with bevacizumab (SRT-Bv) compared with Bv treatment for recurrent high-grade gliomas (HGGs). METHODS: Herein, data for patients with recurrent HGG who received SRT and Bv (n = 29) or Bv (n = 29) between June 2014 and September 2016 were retrospectively analyzed. All patients received conventional radiotherapy (total 60 Gy) before this study. SRT was administered at a median dose of 42 Gy in 3-7 fractions...
March 31, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29605121/an-audit-of-clinical-practice-referral-patterns-and-appropriateness-of-clinical-indications-for-brain-mri-examinations-a-single-centre-study-in-ghana
#8
A D Piersson, G Nunoo, P N Gorleku
INTRODUCTION: The aim of this study was to investigate current brain MRI practice, pattern of brain MRI requests, and their appropriateness using the American College of Radiology (ACR) Appropriateness Criteria. MATERIAL AND METHODS: We used direct observation and questionnaires to obtain data concerning routine brain MRI practice. We then retrospectively analyzed (i) demographic characteristics, (ii) clinical history, and (iii) appropriateness of brain MRI requests against published criteria...
May 2018: Radiography
https://www.readbyqxmd.com/read/29594463/traumatic-brain-injury-in-indian-children
#9
REVIEW
Krishna Chaitanya, Archana Addanki, Rajendra Karambelkar, Rakesh Ranjan
INTRODUCTION: Traumatic brain injury (TBI) in children and adolescents is a community-based medical and educational challenge world-over due to increasing urbanization and motorization. In India, children between 1 to 15 years constitute significant proportion of the total population, who are vulnerable for TBI. In developed countries, pediatric trauma mortality still represents more than half of all childhood fatalities, which is 18 times more common than brain tumors. In this study, we attempted to analyze epidemiological factors, management, and outcome of TBI in children at a tertiary care center in Pune, Maharashtra...
March 29, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29557549/-x-linked-adrenoleukodystrophy-with-an-atypical-radiological-pattern
#10
A Ulate-Campos, J Petanas-Argemi, M Rebollo-Polo, C Jou, C Sierra, J Armstrong, M C Fons-Estupina
INTRODUCTION: X-linked adrenoleukodystrophy (X-ALD) is the most frequent peroxisomal disease. It is due to a mutation in the ABCD1 gene. The loss of functioning of ABCD1 triggers ineffective beta oxidation of very long-chain fatty acids, which gives rise to an accumulation of these fatty acids. The typical alteration revealed in neuroimaging scans in the cerebral form is symmetrical periventricular demyelination with posterior location. CASE REPORT: We report the case of a 10-year-old boy with right spastic hemiparesis and subacute cognitive impairment...
April 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29548309/acantholytic-squamous-cell-carcinoma-of-the-lung-with-marked-lymphogenous-metastases-and-high-titers-of-myeloperoxidase-antineutrophil-cytoplasmic-antibodies-a-case-report
#11
Kenji Yorita, Kazuya Tsuji, Yoko Takano, Naoto Kuroda, Kei Sakamoto, Kaoru Arii, Yukio Yoshimoto, Kimiko Nakatani, Satoshi Ito
BACKGROUND: Acantholytic squamous cell carcinoma (ASQCC), histologically characterized by intercellular bridge loosening, is recognized as a rare variant of squamous cell carcinoma (SQCC). ASQCC may demonstrate a worse prognosis than conventional SQCC. Pulmonary ASQCC is particularly rare; its biological behavior and prognostic data have not been reported. CASE PRESENTATION: We report the clinical and autopsy findings of a 71-year-old Japanese man with pulmonary ASQCC...
March 16, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29479262/increasing-incidence-of-optic-nerve-hypoplasia-septo-optic-dysplasia-spectrum-geographic-clustering-in-northern-canada
#12
Tanya Khaper, Martin Bunge, Ian Clark, Mubeen Fatima Rafay, Aziz Mhanni, Nicole Kirouac, Atul Sharma, Celia Rodd, Brandy Wicklow
Introduction: Owing to the shared embryonic origin, defects in development of optic nerves are often seen in conjunction with defects affecting the surrounding brain and pituitary gland. Optic nerve hypoplasia (ONH) and septo-optic dysplasia (SOD) represent a clinical spectrum associated with visual, pituitary and severe central nervous system structural abnormalities (SODplus). Based on changing clinical patterns, our primary objective was to examine trends in annual incidence of ONH/SOD and geographical clustering in Manitoba...
November 2017: Paediatrics & Child Health
https://www.readbyqxmd.com/read/29479090/mra-based-evaluation-of-anatomical-variation-of-circle-of-willis-in-adult-pakistanis
#13
Rehana Shaikh, Saba Sohail
OBJECTIVE: To determine the frequency and patterns of normal anatomical variation of Circle of Willis on magnetic resonance angiogram in adults without cerebrovascular disease. METHODS: This descriptive cross-sectional study was conducted at the Radiology Department of Dow University of Health Sciences / Civil Hospital, Karachi, from January to December 2016, and comprised patients referred for magnetic resonance imaging of the brain and magnetic resonance angiogram without any clinical or radiological manifestation of cerebrovascular disease, primarily including those with suspected demyelination, infection, epilepsy or metastases...
February 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29473051/ap4-deficiency-a-novel-form-of-neurodegeneration-with-brain-iron-accumulation
#14
Agathe Roubertie, Nelson Hieu, Charles-Joris Roux, Nicolas Leboucq, Gael Manes, Majida Charif, Bernard Echenne, Cyril Goizet, Claire Guissart, Pierre Meyer, Cecilia Marelli, François Rivier, Lydie Burglen, Rita Horvath, Christian P Hamel, Guy Lenaers
Objective: To describe the clinico-radiological phenotype of 3 patients harboring a homozygous novel AP4M1 pathogenic mutation. Methods: The 3 patients from an inbred family who exhibited early-onset developmental delay, tetraparesis, juvenile motor function deterioration, and intellectual deficiency were investigated by magnetic brain imaging using T1-weighted, T2-weighted, T2*-weighted, fluid-attenuated inversion recovery, susceptibility weighted imaging (SWI) sequences...
February 2018: Neurology. Genetics
https://www.readbyqxmd.com/read/29459606/clinical-and-neuro-radiological-presentation-of-tuberous-sclerosis-complex-in-tertiary-care-centre
#15
G K Kundu, S Ahmed, S Akhter, M T Islam, T Dwa, A M Sabbir
Tuberous sclerosis complex (TSC) is a common neurocutaneous disorder characterized by hamartomatous changes in the lungs, brain, kidneys, skin, heart, and other organs. This retrospective study was done to see the clinical presentation and neuro imaging pattern of TSC in a tertiary care centre of Bangladesh and was conducted at Pediatric Neurology Unit of Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from January 2013 to December 2013. Among total 10 patients male-female ratio was 3:2...
January 2018: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29436885/cerebral-perfusion-and-compensatory-blood-supply-in-patients-with-recent-small-subcortical-infarcts
#16
Salvatore Rudilosso, Carlos Laredo, Marco Mancosu, Nuria Moya-Planas, Yashu Zhao, Oscar Chirife, Ángel Chamorro, Xabier Urra
Hypoperfusion is the typical perfusion pattern associated with recent small subcortical infarcts of the brain, but other perfusion patterns may be present in patients with these infarcts. Using CT perfusion, we studied 67 consecutive patients who had a small subcortical infarct at a follow-up MRI study to investigate the correlation between the perfusion pattern and the clinical and radiological course. On CT perfusion map analysis, 51 patients (76%) had focal hypoperfusion, 4 patients (6%) had hyperperfusion and the remaining 12 patients (18%) showed no abnormalities...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29404583/differences-in-the-reponses-to-apheresis-therapy-of-patients-with-3-histopathologically-classified-immunopathological-patterns-of-multiple-sclerosis
#17
Lidia Stork, David Ellenberger, Tim Beißbarth, Tim Friede, Claudia F Lucchinetti, Wolfgang Brück, Imke Metz
Importance: Plasma exchange and immunoadsorption are second-line apheresis therapies for patients experiencing multiple sclerosis relapses. Early active multiple sclerosis lesions can be classified into different histopathological patterns of demyelination. Pattern 1 and 2 lesions show T-cell- and macrophage-associated demyelination, and pattern 2 is selectively associated with immunoglobulin and complement deposits, suggesting a humoral immune response. Pattern 3 lesions show signs of oligodendrocyte degeneration...
April 1, 2018: JAMA Neurology
https://www.readbyqxmd.com/read/29383516/glioblastoma-as-differential-diagnosis-of-autoimmune-encephalitis
#18
Alberto Vogrig, Bastien Joubert, Francois Ducray, Laure Thomas, Cristina Izquierdo, Kévin Decaestecker, Olivier Martinaud, Emmanuel Gerardin, Sylvie Grand, Jérome Honnorat
OBJECTIVE: To identify the clinical and radiological features that should raise suspicion for the autoimmune encephalitis (AE)-like presentation of glioblastoma. METHODS: This is an observational, retrospective case series of patients referred to the French National Reference Center on Paraneoplastic Neurological Diseases for suspected AE (possible, probable or definite, using the 2016 criteria) who later received a final diagnosis of glioblastoma according to 2016 WHO criteria...
March 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29371584/hemorrhagic-brain-metastases-in-a-patient-with-anaplastic-lymphoma-kinase-alk-rearranged-invasive-mucinous-adenocarcinoma-of-the-lung
#19
Mingxia Shi, Hongzhi Xu, Angela DiPoto Brahmbhatt, Eduardo Gonzalez-Toledo, Maria-Magdalena Georgescu
BACKGROUND Invasive mucinous adenocarcinoma (IMA) is a rare variant of adenocarcinoma of the lung. It frequently shows KRAS mutations, while ALK rearrangement is exceedingly rare. We present a case of ALK-rearranged IMA of the lung presenting with an unusual pattern of brain metastases, radiologically mimicking a cavernous angioma. CASE REPORT A 44-year-old non-smoker female was first diagnosed with lung right lower lobe IMA with ALK rearrangement. Five years after surgery followed by chemotherapy, she developed a sudden onset headache...
January 26, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29348602/the-ten-year-evolutionary-trajectory-of-a-highly-recurrent-paediatric-high-grade-neuroepithelial-tumour-with-mn1-bend2-fusion
#20
Anna Burford, Alan Mackay, Sergey Popov, Maria Vinci, Diana Carvalho, Matthew Clarke, Elisa Izquierdo, Aimee Avery, Thomas S Jacques, Wendy J Ingram, Andrew S Moore, Kieran Frawley, Timothy E Hassall, Thomas Robertson, Chris Jones
Astroblastomas are rare brain tumours which predominate in children and young adults, and have a controversial claim as a distinct entity, with no established WHO grade. Reports suggest a better outcome than high grade gliomas, though they frequently recur. Recently, they have been described to overlap with a newly-discovered group of tumours described as'high grade neuroepithelial tumour with MN1 alteration' (CNS HGNET-MN1), defined by global methylation patterns and strongly associated with gene fusions targeting MN1...
January 18, 2018: Scientific Reports
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