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https://www.readbyqxmd.com/read/29028509/delayed-onset-mri-findings-in-acute-chorea-related-to-anoxic-brain-injury
#1
Mehdi Ghasemi, Firas Kaddouh, Anindita Deb, Margaret A Owegi
Anoxic brain injury can manifest with various abnormal movements. We describe acute chorea in a young patient with anoxic brain injury due to chlordiazepoxide toxicity who had delayed radiographic lesions in bilateral globus pallidus. Although brain MRI 8days after the anoxic event was unremarkable, repeat brain MRI 15days after the event showed T2 hyperintensities and enhancement within the bilateral globus pallidi. It is possible that MRI brain findings of bilateral basal ganglia lesions may appear later than onset of chorea in anoxic brain injury...
October 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29027863/potential-utility-of-flair-in-mri-negative-cushing-s-disease
#2
Grégoire P Chatain, Nicholas Patronas, James G Smirniotopoulos, Martin Piazza, Sarah Benzo, Abhik Ray-Chaudhury, Susmeeta Sharma, Maya Lodish, Lynnette Nieman, Constantine A Stratakis, Prashant Chittiboina
OBJECTIVE Accurate presurgical localization of microadenomas in Cushing's disease (CD) leads to improved remission rates and decreased adverse events. Volumetric gradient recalled echo (3D-GRE) MRI detects pituitary microadenomas in CD in up to 50%-80% cases as a focus of hypointensity due to delayed contrast wash-in. The authors have previously reported that postcontrast FLAIR imaging may be useful in detecting otherwise MRI-negative pituitary microadenomas as foci of hyperintensity. This reflects theoretically complementary imaging of microadenomas due to delayed contrast washout...
October 13, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29026667/lumbar-chronic-subdural-hematoma-mimicking-an-intradural-extramedullary-tumor-a-case-report
#3
Hyeun Sung Kim, Nitin Adsul, Yoon Seok Ju, Ki Joon Kim, Sung Ho Choi, Jeong Hoon Kim, Sung Kyun Chung, Jeong-Hoon Choi, Jee-Soo Jang, Il-Tae Jang, Seong-Hoon Oh, Jae Eun Park, Sol Lee
BACKGROUND: Chronic spinal subdural hematomas are extremely rare with only 28 cases reported in the literature. Nevertheless, they should be considered among the differential diagnoses for spinal intradural/extramedullary lesions. CASE REPORT: A 65-year-old male presented with progressive back pain and right S1 radiculopathy. Magnetic resonance imaging scan revealed a right-sided posterolateral intradural/extramedullary lesion at the L5-S1 level. It was hyperintense on T1 and hypointense on T2-weighted images; on the short TI inversion recovery sequence it was hyperintense...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29025963/sacral-dural-arteriovenous-fistulas-a-diagnostic-and-therapeutic-challenge-single-centre-experience-of-13-cases-and-review-of-the-literature
#4
Andrea Gioppo, Giuseppe Faragò, Caterina Giannitto, Luigi Caputi, Andrea Saladino, Francesco Acerbi, Elisa Ciceri
BACKGROUND: Sacral dural arteriovenous fistulas (DAVFs) are rare vascular abnormalities of the spine characterised by slowly progressive symptoms that can mimic different myelopathy disorders. OBJECT: To report our single Institution experience with sacral DAVFs. METHODS: We retrospectively reviewed the clinical records of patients admitted from 1 January 2006 to 31 December 2016 with a diagnosis of sacral DAVFs, treated by endovascular embolisation or surgical clipping...
October 12, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29023976/peripheral-nerve-involvement-in-multiple-sclerosis-demonstration-by-magnetic-resonance-neurography
#5
Johann M E Jende, Gesa H Hauck, Ricarda Diem, Markus Weiler, Sabine Heiland, Brigitte Wildemann, Mirjam Korporal-Kuhnke, Wolfgang Wick, John M Hayes, Johannes Pfaff, Mirko Pham, Martin Bendszus, Jennifer Kollmer
OBJECTIVE: To detect and quantify peripheral nerve lesions in multiple sclerosis (MS) by magnetic resonance neurography (MRN). METHODS: 36 patients diagnosed with MS based on the 2010 McDonald criteria (34 with the relapsing-remitting form, 2 with clinically isolated syndrome) with and without disease modifying treatment were compared to 35 healthy age/sex-matched volunteers. All patients underwent detailed neurological and electrophysiological examinations. 3T MRN with large anatomical coverage of both legs and the lumbosacral plexus was performed by using 2D fat-saturated, T2-weighted and dual echo turbo-spin-echo sequences as well as a 3D T2-weighted, fat-saturated SPACE sequence...
October 10, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/29021984/mri-findings-of-early-stage-hyperacute-hemorrhage-causing-extramedullary-compression-of-the-cervical-spinal-cord-in-a-dog-with-suspected-steroid-responsive-meningitis-arteritis
#6
Adriano Wang-Leandro, Enrice-Ina Huenerfauth, Katharina Heissl, Andrea Tipold
A 9-month-old female Weimaraner was presented to the emergency service due to episodes of fever and neck pain. Physical examination revealed a stiff neck posture and elevated body temperature. Shortly after clinical examination was performed, the dog developed peracute onset of non-ambulatory tetraparesis compatible with a C1-C5 spinal cord (SC) lesion. Immediately thereafter (<1 h), MRI of the cervical SC was performed with a 3-T scanner. A left ventrolateral intradural-extramedullary SC compression caused by a round-shaped structure at the level of C3--C4 was evidenced...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29021757/cerebral-small-vessel-disease-burden-is-associated-with-motor-performance-of-lower-and-upper-extremities-in-community-dwelling-populations
#7
Ning Su, Fei-Fei Zhai, Li-Xin Zhou, Jun Ni, Ming Yao, Ming-Li Li, Zheng-Yu Jin, Gao-Lang Gong, Shu-Yang Zhang, Li-Ying Cui, Feng Tian, Yi-Cheng Zhu
Objective: To investigate the correlation between cerebral small vessel disease (CSVD) burden and motor performance of lower and upper extremities in community-dwelling populations. Methods: We performed a cross-sectional analysis on 770 participants enrolled in the Shunyi study, which is a population-based cohort study. CSVD burden, including white matter hyperintensities (WMH), lacunes, cerebral microbleeds (CMBs), perivascular spaces (PVS), and brain atrophy were measured using 3T magnetic resonance imaging...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29021681/acute-spinal-cord-compression-caused-by-atypical-vertebral-hemangioma
#8
Salah Bellasri, Jamal Fatihi, Abderrahim Elktaibi, Abad Cherif El Asri
Vertebral hemangioma is common, benign lesion that occurs mostly in the body of vertebral bones and is mostly asymptomatic although they may occasionally extend into the posterior elements. An isolated location in the neural arch of vertebrae is extremely rare. An acute spinal cord compression by an exceptional hemangioma involving spinous process of the seventh thoracic vertebra and respecting vertebral body in a 40-year-old woman is reported. On magnetic resonance imaging of the spine, the lesion was hypointense on T1-weighted image, hyperintense on T2-weited image, and enhancing avidly, causing compression of spinal cord...
July 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29021680/nondysraphic-cervicomedullary-intramedullary-lipoma
#9
Sujeet Kumar Meher, Laxmi Narayan Tripathy, Harsh Jain, Sunandan Basu
Spinal cord lipomas are usually associated with spinal dysraphism and is most common in lumbosacral region. Spinal intradural lipoma is a rare condition accounting for less than 1% of spinal cord tumours and is most prevalent in cervicodorsal region. Intramedullary spinal cord lipoma of cervical spine not associated with spinal dysraphism is one of the rarest lesions. They usually present insidiously with slowly progressive myelopathic deficits. We present a case of nondysraphic intramedullary spinal cord lipoma with exophytic component and intracranial extension...
July 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29021671/atlantoaxial-langerhans-cell-histiocytosis-radiographic-characteristics-and-corresponding-prognosis-analysis
#10
Lihua Zhang, Liang Jiang, Huishu Yuan, Zhongjun Liu, Xiaoguang Liu
BACKGROUND: Langerhans cell histiocytosis (LCH) may affect atlas and axis, and there were very few published cases describing a characteristic of LCH of atlantoaxial. OBJECTIVE: The objective of the study is to investigate the image manifestations of atlantoaxial LCH to improve the in-depth comprehension on it. MATERIALS AND METHODS: A retrospective study was done of computed tomography (CT) and magnetic resonance imaging in atlas and axis and prognosis was analyzed...
July 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29021478/rhabdomyolysis-in-a-patient-with-polyarteritis-nodosa
#11
Harunobu Iida, Hironari Hanaoka, Yusa Asari, Kana Ishimori, Tomofumi Kiyokawa, Yukiko Takakuwa, Yoshioki Yamasaki, Hidehiro Yamada, Takahiro Okazaki, Masatomo Doi, Shoichi Ozaki
Polyarteritis nodosa (PAN) is a medium vessel vasculitis affecting systemic organs. Muscle involvement of PAN usually lacks elevation of creatinine kinase (CK). We herein report a case of PAN with rhabdomyolysis. A 71-year-old man was hospitalized because of muscle weakness of the lower limbs that persisted for 1 month. On a physical examination, rapidly progressive lower proximal muscle weakness and bilateral drop foot were observed. His blood test showed an elevation in the C-reactive protein (CRP) (19.5 mg/dL) and CK (13,435 IU/L) levels and negativity for anti-neutrophilic cytoplasmic antibody (ANCA)...
October 11, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29019745/imaging-of-nonmalignant-adrenal-lesions-in-children
#12
Kiran M Sargar, Geetika Khanna, Rebecca Hulett Bowling
The adrenal glands in children can be affected by a variety of benign lesions. The diagnosis of adrenal lesions can be challenging, but assessment of morphologic changes in correlation with the clinical presentation can lead to an accurate diagnosis. These lesions can be classified by their cause: congenital (eg, discoid adrenal gland, horseshoe adrenal gland, and epithelial cysts), vascular and/or traumatic (eg, adrenal hemorrhage), infectious (eg, granulomatous diseases), enzyme deficiency disorders (eg, congenital adrenal hyperplasia [CAH] and Wolman disease), benign neoplasms (eg, pheochromocytomas, ganglioneuromas, adrenal adenomas, and myelolipomas), and adrenal mass mimics (eg, extralobar sequestration and extramedullary hematopoiesis)...
October 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29018653/chiari-type-1-malformation-induced-intracranial-hypertension-with-diffuse-brain-edema-treated-with-foramen-magnum-decompression-a-case-report
#13
Toshiki Fukuoka, Yusuke Nishimura, Masahito Hara, Shoichi Haimoto, Kaoru Eguchi, Satoshi Yoshikawa, Toshihiko Wakabayashi, Howard J Ginsberg
Chiari type 1 malformation (CM1) rarely causes papilloedema, which is indicative of high intracranial pressure with or without ventricular dilatation. Furthermore, concomitant brain parenchymal abnormalities have not been reported to date. In this paper, the authors report on a young woman of CM1-induced intracranial hypertension (ICH) with diffuse brain edema with a focus on venous sinus assessment, and discuss the surgical strategy. A 24-year-old woman presented to Nagoya University Hospital complaining of 4-year history of severe occipital headache and blurry vision with slowly progressive worsening...
October 2017: NMC Case Rep J
https://www.readbyqxmd.com/read/29018401/risk-factors-and-clinical-manifestations-of-juxtacortical-small-lesions-a-neuroimaging-study
#14
Yilong Shan, Sha Tan, Yuge Wang, Kui Li, Lei Zhang, Siyuan Liao, Li Zhou, Zhezhi Deng, Xueqiang Hu, Haiyan Li, Xuejiao Men, Bingjun Zhang, Lisheng Peng, Zhuang Kang, Yan Zou, Zhengqi Lu
BACKGROUND AND OBJECTIVE: White matter hyperintensities can be easily identified by brain imaging. Juxtacortical small lesion (JCSL) is a special type of white matter lesion, defined as no greater than 5 mm in diameter and adjacent to the cerebral cortex in location. We notice lately that JCSLs alone may be associated to various neurological symptoms. Here, we design the present study to determine the risk factors for JCSLs and their clinical manifestations in patients in our neurology clinic...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29018129/neuroimaging-correlates-of-cerebral-microbleeds-the-aric-study-atherosclerosis-risk-in-communities
#15
Jonathan Graff-Radford, Jeannette Simino, Kejal Kantarci, Thomas H Mosley, Michael E Griswold, B Gwen Windham, A Richey Sharrett, Marilyn S Albert, Rebecca F Gottesman, Clifford R Jack, Prashanthi Vemuri, David S Knopman
BACKGROUND AND PURPOSE: Cerebral microbleed (CMB) location (deep versus strictly lobar) may elucidate underlying pathology with deep CMBs being more associated with hypertensive vascular disease and lobar CMBs being more associated with cerebral amyloid angiopathy. The objective of this study was to determine whether neuroimaging signs of vascular disease and Alzheimer pathology are associated with different types of CMBs. METHODS: Among 1677 nondemented ARIC (Atherosclerosis Risk in Communities) participants (mean age=76±5 years; 40% men; 26% black) with 3-Tesla MRI scans at the fifth examination (2011-2013), we fit multinomial logistic regression models to quantify relationships of brain volumes (Alzheimer disease signature regions, total gray matter, frontal gray matter, and white matter hyperintensity volumes), infarct frequencies (lacunar, nonlacunar, and total), and apolipoprotein E(number of ε4 alleles) with CMB location (none, deep/mixed, or strictly lobar CMBs)...
October 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28993361/a-rare-case-of-extra-adrenal-bilateral-perirenal-and-periureteric-myelolipoma
#16
Samireddypalle Yugandhar, Sanjoy Kumar Sureka, Priyank Yadav, Hira Lal
A 30-year-old immunocompetent female presented with right flank pain since 3 years. MRI revealed a large well-defined T1 and T2 hypointense mildly enhancing lesion in the right anterior pararenal space displacing the right kidney and encasing the right ureter with T2 hyperintense wall thickening of the left renal pelvis and ureter. A provisional diagnosis of solitary fibrous tumour was kept. Bilateral double J stenting was done for hydronephrosis. Surgical debulking of the lesion was done with biopsy from the left periureteral wall thickening and was found to be myelolipoma on histopathological examination...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28991905/the-presence-and-severity-of-cerebral-small-vessel-disease-increases-the-frequency-of-stroke-in-a-cohort-of-patients-with-large-artery-occlusive-disease
#17
Ki-Woong Nam, Hyung-Min Kwon, Jae-Sung Lim, Moon-Ku Han, Hyunwoo Nam, Yong-Seok Lee
BACKGROUND: Cerebral small vessel disease (SVD) commonly coexists with large artery atherosclerosis (LAA). AIM: We evaluate the effect of SVD on stroke recurrence in patients for ischemic stroke with LAA. METHODS: We consecutively collected first-ever ischemic stroke patients who were classified as LAA mechanism between Jan 2010 and Dec 2013. Univariate and multivariate Cox analyses were performed to evaluate the association between the 2-year recurrence and demographic, clinical, and radiological factors...
2017: PloS One
https://www.readbyqxmd.com/read/28991689/intraoperative-neuromonitoring-loss-in-abnormal-magnetic-resonance-imaging-signal-intensity-from-patients-with-cervical-compressive-myelopathy
#18
Xiangquan Lin, Chaoxiong Li, Qin Lin, Zhong Zheng
PURPOSE: Our objective of this study was to evaluate if cervical compressive myelopathy (CCM) patients with preoperative abnormal magnetic resonance imaging (MRI) might easily lead to intraoperative neuromonitoring (IONM) loss. METHOD: A consecutive series of 152 CCM patients who underwent cervical cord decompression were enrolled in this study between December 2013 and February 2017. All patients with abnormal MRI signal intensity were divided into 2 groups (group 1: T2-WIs hyperintensity; group 2: both T2-WIs hyperintensity and T1-WIs hypointensity)...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28987696/computed-diffusion-weighted-mr-imaging-for-visualization-of-pancreatic-adenocarcinoma-comparison-with-acquired-diffusion-weighted-imaging
#19
Yoshihiko Fukukura, Yuichi Kumagae, Hiroto Hakamada, Toshikazu Shindo, Koji Takumi, Kiyoshisa Kamimura, Masanori Nakajo, Aya Umanodan, Takashi Yoshiura
OBJECTIVE: To assess the feasibility of computed diffusion-weighted imaging (cDWI) in comparison with directly acquired DWI for visualizing pancreatic adenocarcinomas. MATERIALS AND METHODS: Patients with pancreatic adenocarcinoma underwent DWI at b-values of 0, 1000 (DWI1000), 1500 (DWI1500) and 2000 (DWI2000) s/mm(2). From DWIs at b-values of 0 and 1000s/mm(2), we generated cDWIs at b-values of 1500 (cDWI1500) and 2000 (cDWI2000) s/mm(2). DWI findings of pancreatic adenocarcinomas (clear hyperintensity; hyperintensity with an unclear distal border; and isointensity), the image quality and the tumor to pancreas contrast ratio (CR) were compared between directly acquired DWI and cDWI...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28987688/differentiation-of-hypointense-nodules-on-gadoxetic-acid-enhanced-hepatobiliary-phase-mri-using-t2-enhanced-spin-echo-imaging-with-the-time-reversed-gradient-echo-sequence-an-initial-experience
#20
Masami Yoneyama, Yukihisa Takayama, Akihiro Nishie, Masanobu Nakamura, Yasutomo Katsumata, Atsushi Takemura, Makoto Obara, Tomoyuki Okuaki, Hiroshi Honda, Marc Van Cauteren
PURPOSE: To optimize the flip angle (FA) of the T2 enhanced spin-echo imaging using the time reversed gradient echo (T2FFE) and evaluate its utility for differentiating hypointensity nodules in the hepatobiliary phase (HBP) of gadoxetic acid-enhanced (Gd-EOB) MRI. MATERIALS AND METHODS: First, FA optimization of the T2FFE in the HBP was investigated by comparing signal-to-noise ratio (SNR) among different FAs using phantoms. The liver-to-muscle contrast ratios (CRLiver-Muscle) and image quality among three FAs (20°, 50° and 80°) were compared using images of 10 patients...
October 2017: European Journal of Radiology
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