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https://www.readbyqxmd.com/read/28053539/complex-neurological-symptoms-in-bilateral-thalamic-stroke-due-to-percheron-artery-occlusion
#1
Paola Caruso, Paolo Manganotti, Rita Moretti
The artery of Percheron is a rare anatomical variant where a single thalamic perforating artery arises from the proximal posterior cerebral artery (P1 segment) between the basilar artery and the posterior communicating artery and supplies the rostral mesencephalon and both paramedian territories of the thalami. Almost one-third of human brains present this variant. Occlusion of the artery of Percheron mostly results in a bilateral medial thalamic infarction, which usually manifests with altered consciousness (including coma), vertical gaze paresis, and cognitive disturbance...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/28045864/bilateral-central-retinal-vein-occlusions-in-a-young-patient-with-a-history-of-eosinophilic-pneumonia-and-thalamic-stroke
#2
Gina Yu, Peng Sun, Tavé van Zyl, Rachel Tandias, Jorge G Arroyo
PURPOSE: To describe a case of a central retinal vein occlusion in a young patient with a history of eosinophilic pneumonia. METHODS: A retrospective case report of a 45-year-old woman with acute painless vision loss for 9 days after multiple episodes of eosinophilic pneumonia and thalamic stroke. Fluorescein angiography, spectral domain optical coherence tomography, and clinical examination were performed. She was then treated with intravitreal bevacizumab and pan-retinal photocoagulations...
December 29, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28043958/fluctuating-drowsiness-following-cardiac-catheterisation-artery-of-percheron-ischaemic-stroke-causing-bilateral-thalamic-infarcts
#3
Daniel Hammersley, Ankur Arora, Madhava Dissanayake, Nabarun Sengupta
An 81-year-old man underwent cardiac catheterisation to investigate breathlessness and left ventricular impairment of unknown cause. He had unobstructed coronary arteries. Immediately following the procedure, he became suddenly unresponsive with vertical gaze palsy, anisocoria and bilateral upgoing plantar responses. He made a rapid recovery to his premorbid state 25 min later with no residual focal neurological signs. He then had multiple unresponsive episodes, interspaced with complete resolution of symptoms and neurological signs...
January 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28003494/thalamic-stroke-resulting-in-rheumatoid-appearances-in-the-hand
#4
Ting Zhang, Weihong Xu, Lu Ye, Jing Xue, Huaxiang Wu
No abstract text is available yet for this article.
December 21, 2016: Rheumatology
https://www.readbyqxmd.com/read/27994572/examining-subcortical-infarcts-in-the-era-of-acute-multimodality-ct-imaging
#5
Mindy Y Q Tan, Shaloo Singhal, Henry Ma, Ronil V Chandra, Jamie Cheong, Benjamin B Clissold, John Ly, Velandai Srikanth, Thanh G Phan
BACKGROUND: Lacunar infarct has been characterized as small subcortical infarct. It is postulated to occur from "in situ microatheroma or lipohyalinosis" in small vessel or lacunar mechanism. Based on this idea, such infarcts by lacunar mechanism should not be associated with large area of perfusion deficits that extend beyond the subcortical region to the cortical region. By contrast, selected small subcortical infarcts, as defined by MR imaging in the subacute and chronic stage, may initially have large perfusion deficit or related large vessel occlusions...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27992392/animal-models-for-central-poststroke-pain-a-critical-comprehensive-review
#6
Philippe De Vloo, Bart Morlion, Johannes van Loon, Bart Nuttin
Central poststroke pain (CPSP) is a severe type of neuropathic pain that can develop after stroke and is difficult to treat. Research into its underlying mechanisms and treatment options could benefit from a valid CPSP animal model. Nine different CPSP animal models have been published, but there are relatively few reports on successful reproductions of these models and so far only little advances in the understanding or the management of CPSP have been made relying on these models. In general, the construct validity (similarity in underlying mechanisms) of these CPSP animal models is relatively high, although this cannot be evaluated into depth because of lack of understanding the mechanisms through which thalamic stroke can lead to CPSP...
January 2017: Pain
https://www.readbyqxmd.com/read/27960164/clinical-stroke-syndromes
#7
Jong S Kim, Louis R Caplan
The main mechanism of stroke in patients who have extracranial atherosclerosis is artery to artery embolism, occasionally associated with hemodynamic disturbances. Although these mechanisms are also important in patients with intracranial atherosclerosis, branch occlusion and in-situ thrombotic occlusion play a relatively more important role in these patients. Accordingly, clinical stroke syndromes differ between extracranial atherosclerosis and intracranial atherosclerosis. In anterior circulation, middle cerebral artery atherosclerosis frequently produces subcortical infarction by way of branch occlusion...
2016: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/27930506/change-of-ascending-reticular-activating-system-with-recovery-from-vegetative-state-to-minimally-conscious-state-in-a-stroke-patient
#8
Sung Ho Jang, Chul Hoon Chang, Young Jin Jung, You Sung Seo
RATIONALE: We report on a stroke patient who showed change of the ascending reticular activating system (ARAS) concurrent with recovery from a vegetative state (VS) to a minimally conscious state (MCS), which was demonstrated on diffusion tensor tractography (DTT). PATIENT CONCERNS: A 59-year-old male patient underwent CT-guided stereotactic drainage 3 times for management of intracerebral hemorrhage and intraventricular hemorrhage. DIAGNOSIS: After 4 months from onset, when starting rehabilitation, the patient showed impaired consciousness, with a Glasgow Coma Scale (GCS) score of 6 and a Coma Recovery Scale-Revised score of 2...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27895449/cadasil-presenting-with-spontaneous-intracerebral-hemorrhage-report-of-a-case-and-description-of-the-first-family-in-northern-greece
#9
I Koutroulou, T Karapanayiotides, N Grigoriadis, D Karacostas
INTRODUCTION: CADASIL (cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy), the most common inherited cause of stroke and dementia in adults, has been described in six Greek families. Common presenting manifestations include migraine with aura, brain ischemia, mood disorders and cognitive decline. Spontaneous intracerebral hemorrhage (SICH) rarely occurs in CADASIL and only exceptionally as the first clinical manifestation. CASE DESCRIPTION: We have previously reported the sixth Greek family with CADASIL and in particular, two brothers in whom the genetic testing documented a classic mutation of the NOTCH3 gene (Arg169Cys)...
January 2016: Hippokratia
https://www.readbyqxmd.com/read/27801766/cessation-of-smoking-and-alcohol-addiction-following-thalamic-hemorrhage
#10
Fatima Najeeb, Brian Silver, Muhib Khan
INTRODUCTION: We describe a case of thalamic intracerebral hemorrhage leading to cessation of smoking. CASE REPORT: A 53-year-old female presented to the emergency department with right-sided weakness and dysarthria. Initial systolic blood pressure was 220 mm Hg. Computed tomography scan showed a left thalamic hemorrhage with associated edema and hemorrhage extending into the left lateral and third ventricle. She recovered uneventfully and was discharged to inpatient rehabilitation and eventually transitioned home...
November 2016: Neurologist
https://www.readbyqxmd.com/read/27798270/magnetic-resonance-imaging-of-local-and-remote-vascular-remodelling-after-experimental-stroke
#11
Pavel Yanev, Peter R Seevinck, Umesh S Rudrapatna, Mark Jrj Bouts, Annette van der Toorn, Karen Gertz, Golo Kronenberg, Matthias Endres, Geralda A van Tilborg, Rick M Dijkhuizen
The pattern of vascular remodelling in relation to recovery after stroke remains largely unclear. We used steady-state contrast-enhanced magnetic resonance imaging to assess the development of cerebral blood volume and microvascular density in perilesional and exofocal areas from (sub)acutely to chronically after transient stroke in rats. Microvascular density was verified histologically after infusion with Evans Blue dye. At day 1, microvascular cerebral blood volume and microvascular density were reduced in and around the ischemic lesion (intralesional borderzone: microvascular cerebral blood volume = 72 ± 8%; microvascular density = 76 ± 8%) (P < 0...
October 19, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27777349/teaching-neuroimages-stroke-mimicking-thalamotomy-cessation-of-tremor-following-ventrolateral-thalamic-ischemia
#12
Andreas Horn, Laura Kipp, Antonio Meola, Andrea A Kühn, Christoph Leithner
No abstract text is available yet for this article.
October 25, 2016: Neurology
https://www.readbyqxmd.com/read/27758775/acute-ischemic-stroke-infarct-topology-association-with-lesion-volume-and-severity-of-symptoms-at-admission-and-discharge
#13
S Payabvash, S Taleb, J C Benson, A M McKinney
BACKGROUND AND PURPOSE: Acute stroke presentation and outcome depend on both ischemic infarct volume and location. We aimed to determine the association between acute ischemic infarct topology and lesion volume and stroke severity at presentation and discharge. MATERIALS AND METHODS: Patients with acute ischemic stroke who underwent MR imaging within 24 hours of symptom onset or last seen well were included. Infarcts were segmented and coregistered on the Montreal Neurological Institute-152 brain map...
October 6, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27681112/effects-of-thalamic-hemorrhagic-lesions-on-explicit-and-implicit-learning-during-the-acquisition-and-retrieval-phases-in-an-animal-model-of-central-post-stroke-pain
#14
Cheng Chung Wang, Hsi-Chien Shih, Bai Chuang Shyu, Andrew Chih Wei Huang
Hemorrhagic stroke has many symptoms, including central pain, learning and memory impairments, motor deficits, language problems, emotional disturbances, and social maladjustment. Lesions of the ventral basal complex (VBC) of the thalamus elicit thermal and mechanical hyperalgesia, forming an animal model of central post-stroke pain (CPSP). However, no research has yet examined the involvement of learning and memory in CPSP using an animal model. The present study examined whether VBC lesions affect motor function, conditioned place preference (CPP; implicit memory), and spatial learning (explicit memory) in the acquisition and retrieval phases...
September 25, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27676986/cortical-activity-and-egocentric-representation-an-fmri-study
#15
Annelise Raillon Moulinet, Lucie Chochina, Stéphanie Challois Leplaideur, Elise Bannier, Jean-Christophe Ferre, Isabelle Bonan
OBJECTIVE: Subjects use different referentials for spatial localization, and the egocentric references are very often impaired especially during stroke. The objective is to find the difference between activations induced by 2 egocentric tasks MATERIAL/PATIENTS AND METHODS: Seventeen right-handed healthy subjects (50.4±14.9 years) were tested using fMRI during the realization of 2 egocentric spatial tasks: the perception of the straight ahead (retinocentric) and the longitudinal axis of the body (centered by the trunk)...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27672973/poster-212-functional-improvement-through-inpatient-rehabilitation-in-a-patient-with-hyperkinetic-movement-disorder-secondary-to-thalamic-and-basal-ganglia-stroke-a-case-report
#16
David L Jung, Peter Hwang
No abstract text is available yet for this article.
September 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/27662454/left-dorsomedial-thalamic-damage-impairs-verbal-recall-more-than-recognition-a-case-report
#17
Massimiliano Ruggeri
Damage to the dorsomedial thalamus usually leads to impaired episodic memory, attention, and executive function, but the role of the dorsomedial thalamus in memory processing is still not fully understood. Clinical evidence is inconclusive about whether dorsomedial thalamic damage impairs recall or whether it impairs recognition. I report a unique patient who suffered a cardioembolic stroke in the paramedian artery territory, caused by a patent foramen ovale. He was left with a chronic ischemic lesion centered in the parvocellular and, to a lesser extent, the magnocellular portions of the left dorsomedial thalamic nucleus, and marginally involving the midline and intralaminar nuclei...
September 2016: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/27647964/artery-of-percheron-infarction
#18
K V Vinod, R Kaaviya, Bhaumik Arpita
Artery of Percheron (AOP) occlusion is a rare cause of ischemic stroke characterized by bilateral paramedian thalamic infarcts, with or without mesencephalic infarction. Clinically it presents with mental state disturbances, hypersomnolence, aphasia/dysarthria, amnesia and ocular movement disorders, including vertical gaze palsy. Here, we report a case of cardioembolic AOP infarction in a 37-year-old woman with rheumatic mitral valvular stenosis. This case is being reported to highlight the interesting clinical and neuroimaging features of this rare condition, and the differential diagnosis of AOP infarction on imaging have been discussed...
July 2016: Annals of Neurosciences
https://www.readbyqxmd.com/read/27606284/acute-pseudobulbar-palsy-after-bilateral-paramedian-thalamic-infarction-a-case-report
#19
Hye Yeon Lee, Min Jeong Kim, Bo-Ram Kim, Seong-Eun Koh, In-Sik Lee, Jongmin Lee
Bilateral paramedian thalamic infarction is a rare subtype of stroke caused by occlusion of the artery of Percheron, an uncommon variant originating from one of the posterior cerebral arteries. This type of stroke has several major clinical presentations: altered mental status, behavioral amnestic impairment, aphasia or dysarthria, ocular movement disorders, motor deficits, cerebellar signs, and others. Few cases of bilateral paramedian thalamic infarction-related pseudobulbar palsy characterized by dysarthria, dysphagia, and facial and tongue weakness have been reported...
August 2016: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/27593970/acute-bithalamic-infarct-manifesting-as-sleep-like-coma-a-diagnostic-challenge
#20
Asaf Honig, Ruth Eliahou, Roni Eichel, Ari Aharon Shemesh, Tamir Ben-Hur, Eitan Auriel
Bilateral thalamic infarction (BTI) typically presents as a sleep-like coma (SLC) without localizing signs, posing a diagnostic challenge that may lead the treating physician to search for toxic or metabolic causes and delay treatment. We review our experience with BTI of different etiologies, and emphasize the critical role of timely imaging, diagnosis, and management in a series of 12 patients with a presentation of SLC and acute BTI who were managed in our Medical Centers from 2006-2015. In 11/12, urgent head CT scans showed normal brain tissue, while diffusion-weighted (DWI) MRI revealed symmetric bilateral thalamic hyperintense lesions with variable degrees of brainstem involvement...
September 1, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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