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cerebellar hemorrhage

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https://www.readbyqxmd.com/read/29133459/pathophysiological-changes-of-the-cerebellum-and-brain-stem-in-a-rabbit-model-after-superior-petrosal-vein-sacrifice
#1
Lei Cheng, Pin Guo, Yi-Wei Liao, Hong-Liang Zhang, Huan-Ting Li, Xianrui Yuan
In certain surgical procedures sacrifice of the superior petrosal vein (SPV) is required. Previous studies have reported transient cerebellar edema, venous infarction or hemorrhage might occur after sectioning of the SPV. This study investigated the pathophysiological changes of cerebellum and brain stem after SPV sacrifice. Rabbits were divided into the operation group where the SPV was sacrificed and the control group where the SPV remained intact. Each group was further subdivided into 4, 8, 12, 24, 48 and 72 hours groups which represented the time period from sacrifice of the SPV to sacrifice of the rabbits...
November 13, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29104687/traumatic-transient-herniation-concomitant-with-tonsillar-hemorrhagic-contusion-in-a-child
#2
Ahmet Öğrenci, Orkun Koban, Murat Ekşi, Onur Yaman, Sedat Dalbayrak
Downward displacement of cerebellar tonsils more than 5 mm below the foramen magnum is named as Chiari type I malformation and named benign tonsillar ectopia if herniation is less than 3 mm. It does not just depend on congenital causes. There are also some reasons for acquired Chiari Type 1 and benign tonsillar ectopia/herniation. Trauma is one of them. Trauma may increase tonsillar ectopia or may be the cause of new-onset Chiari type 1. The relationship between the tonsil contusion and its position is unclear...
October 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29103866/-an-uncommon-complication-of-dengue
#3
Manan Mehta, Praveen Kumar Sharma, Ravindra Kumar Garg
Intracranial hemorrhage is an uncommon complication of dengue fever, which is caused by a flavivirus and transmitted via Aedes mosquito. We present here bilateral cerebellar bleed because of dengue virus infection.
November 2, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29076900/absent-cerebellar-circulation-with-intact-cerebral-blood-flow-on-a-99mtc-bicisate-brain-death-study
#4
Matthew Q Schmidt, Frank V Schraml
A 55-year old woman presented in an obtunded state and was found to have a subarachnoid hemorrhage. After endovascular repair, her condition deteriorated, and brain death was suspected. A Tc bicisate brain blood flow study was performed, which showed a complete absence of blood flow to the cerebellum despite intact circulation to the cerebral hemispheres. These atypical findings are likely a result of a transient intracranial pressure differential and the timing of the study. A timely and accurate declaration of brain death has important psychosocial and ethical implications, particularly when organ donation is being considered...
October 26, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29075584/subarachnoid-hemorrhage-associated-with-intratumoral-aneurysm-rupture-within-a-posterior-fossa-hemangioblastoma-the-importance-of-continued-surveillance-for-cerebral-vasospasm
#5
Connie Ju, Christina H Wright, James Wright, Yifei Duan, Nicholas C Bambakidis
Cerebellar hemangioblastomas are rare tumors of the neuraxis. Only seven cases of hemangioblastoma associated with a cerebral aneurysm have been reported. We report a case of a patient who presented with acute onset headache as a result of subarachnoid hemorrhage (SAH) and hydrocephalus. Radiographic workup revealed a hemangioblastoma with an intratumoral aneurysm. Preoperative cerebral angiography was performed for both embolization as well as characterization of the aneurysm. The patient underwent a suboccipital craniotomy for tumor resection...
August 24, 2017: Curēus
https://www.readbyqxmd.com/read/29026675/advantages-of-using-a-detachable-tip-microcatheter-and-liquid-embolic-agents-in-the-preoperative-embolization-of-a-recurrent-cerebellar-hemangioblastoma-a-case-report
#6
Nicolas Yanez, Luisa K Cifuentes, Marcela Mejia, Juan N Useche
BACKGROUND: The preferred treatment for intracranial hemangioblastomas is surgical resection with or without preoperative embolization, however, embolization remains controversial due to risks such as distal tip entrapment, vascular injury during navigation, and embolic agent migration. CASE DESCRIPTION: A 54-year-old woman was admitted for surgical resection and preoperative embolization of a cerebellar hemangioblastoma. Although experience using Onyx with detachable and nondetachable tip microcatheters has been well reported in a variety of clinical circumstances, we describe the first case of a presurgical embolization of an intra-axial tumor using a second-generation detachable-tip microcatheter and a nonadhesive liquid embolic agent...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28992723/severe-cerebellar-hemorrhage-following-transverse-sinus-stenting-for-idiopathic-intracranial-hypertension
#7
Pascale Lavoie, Marie-Ève Audet, Jean-Luc Gariepy, Martin Savard, Steve Verreault, Alain Gourdeau, Geneviève Milot, Sylvine Carrondo Cottin
We report a severe adverse event occurring in the course of a cohort study (ISRCTN13784335) aimed at measuring the efficacy and safety of venous stenting in the treatment of patients with medically refractory idiopathic intracranial hypertension (IIH). The patient was a 41-year-old woman who was not overweight, who presented with severe headache, grade 1 bilateral papilledema and transient tinnitus, refractory to medical treatment. Right transverse sinus stenting was successfully performed. Following surgery, the patient's state of consciousness decreased acutely with rapid and progressive loss of brainstem reflex...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28987840/endovascular-treatment-of-ruptured-vertebrobasilar-dissecting-aneurysms-using-flow-diversion-embolization-devices-single-institution-experience
#8
Waldo R Guerrero, Santiago Ortega-Gutierrez, Minako Hayakawa, Colin P Derdeyn, James D Rossen, David Hasan, Edgar A Samaniego
OBJECTIVE: Treatment of ruptured posterior circulation dissecting aneurysms is technically challenging with potentially high morbidity and mortality. We sought to assess the safety and feasibility of using a flow diversion devices (FDD) and a specific acute antiplatelet aggregation protocol in the management of ruptured dissecting aneurysms. METHODS: Subjects with ruptured dissecting aneurysms treated during a three-year period were retrospectively identified from a prospective registry...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28960150/pure-arterial-malformations
#9
Waleed Brinjikji, Harry J Cloft, Kelly D Flemming, Simone Comelli, Giuseppe Lanzino
OBJECTIVE Over the last half century, there have been isolated case reports of purely arterial malformations. In this study, the authors report a consecutive series of patients with pure arterial malformations, emphasizing the clinical and radiological features of these lesions. METHODS Pure arterial malformations were defined as dilated, overlapping, and tortuous arteries with a coil-like appearance and/or a mass of arterial loops without any associated venous component. Demographic characteristics of the patients, cardiovascular risk factors, presentation, radiological characteristics, and follow-up data were collected...
September 29, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28919136/pilocytic-astrocytoma-mimicking-cavernous-angioma-imaging-features-and-histological-characteristics
#10
M Gaha, F Bouzayen, Y Limam, M Mokni, H Jemni-Gharbi, K Tlili-Graiess
Pilocytic astrocytoma (PA) commonly occurs during the first two decades of life. Typical locations include cerebellum, optic nerve, optic chiasm/hypothalamus and brainstem. PA should be considered in the differential diagnosis of patients with brain tumors manifesting with hemorrhagic onset. We report a case of a hemorrhagic onset of cerebellar PA in a young adult with imaging findings mimicking cavernous angioma. We also discuss imaging features and histological characteristics with a focus on the etiology of the hemorrhagic onset...
September 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28899830/simple-lateral-suboccipital-approach-and-modification-for-vertebral-artery-aneurysms-a-study-of-52-cases-over-10-years
#11
Mardjono Tjahjadi, Behnam Rezai-Jahromi, Joseph Serrone, Ville Nurminen, Joham Choque-Velasquez, Riku Kivisaari, Hanna Lehto, Mika Niemelä, Juha Hernesniemi
INTRODUCTION: Complex skull base approaches are frequently used to treat intracranial vertebral artery (VA) and proximal posterior inferior cerebellar artery (PICA) aneurysms. These complex procedures are associated with higher risk of neurovascular injury. Hence, a less invasive surgical approach is needed to improve treatment's efficacy and safety. MATERIAL AND METHODS: A retrospective analysis was conducted on clinical and radiological data from surgeries where simple lateral suboccipital and "lateral enough" approaches were used to clip VA aneurysms in the Department of Neurosurgery at Helsinki University Central Hospital from 2000 - 2009...
September 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28893126/a-case-with-coil-embolization-for-ruptured-aneurysm-associated-with-fenestration-of-the-posterior-inferior-cerebellar-artery
#12
Kazushi Maeda, Ryota Motoie, Satoshi Karashima, Ryosuke Otsuji, Nice Ren, Shintaro Nagaoka, Yoshiaki Ikai, Junji Uno, Hidefuku Gi
An 87-year-old man hospitalized for subarachnoid hemorrhage showed a ruptured aneurysm arising from fenestration of the posterior inferior cerebellar artery. Endovascular treatment was selected and the aneurysm and superior limb were embolized completely using three coils. Fenestration of the posterior cerebellar artery is exceedingly rare. In addition, we present a first case of aneurysm as fenestration of the posterior inferior cerebellar artery that was definitively identified as a cause of bleeding.
December 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28891898/vascular-anomalies-of-posterior-fossa-and-their-implications
#13
Rajani Singh, Raj Kumar, Arushi Kumar
Posterior fossa houses very vital and sensitive structures namely midbrain, pons, medulla, and cerebellum. These structures are irrigated by vertebral, posterior inferior cerebellar, anterior inferior cerebellar, and superior cerebellar arteries. Parts of brain located in posterior fossa control important parts of body so any variation pertaining to stenosis, atresia, hypoplasia, fenestration, agenesis, and duplication in the arteries supplying these parts alter the irrigation pattern culminating into various morbid and mortal neurologic disorders...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28885973/hemorrhagic-stroke-in-a-young-healthy-male-following-use-of-pre-workout-supplement-animal-rage-xl
#14
Brandon F Harris, Coty Winn, Thomas B Ableman
So-called "pre-workout" supplements are substances marketed as natural dietary supplements with claims of helping athletes achieve more focused and intense workouts. The use of such products remains popular among American youth as a whole, but is especially high among active duty service members. Supplements are minimally regulated by the Food and Drug Administration (FDA), and unlike pharmaceuticals, supplements are often brought to market without any testing to show neither efficacy nor safety. Several case reports have documented serious adverse events and raise the question of whether supplement use was a causative factor...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28882465/remote-cerebellar-hemorrhage-caused-by-undetected-dural-tear-after-lumbar-spinal-surgery
#15
Estela Val-Jordán, Pilar Seral-Moral, Beatriz Novo-González
Remote cerebellar haemorrhage is a rare but serious complication after spinal surgery. Although the mechanism is not well known, it always occurs after loss of cerebrospinal fluid due to dural tear, not always identified, which produces remote venous bleeding. Prognosis depends largely on the severity of this bleeding. We report a case of 67-year-old female who suffered a cerebellar and subarachnoid haemorrhage and subdural haematoma after elective lumbar fusion surgery and eventually required decompressive craniectomy...
September 4, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28870822/radiological-features-and-surgical-strategy-of-hemangioblastomas-with-enhanced-cyst-wall
#16
Qiguang Wang, Si Zhang, Jian Cheng, Wenke Liu, Xuhui Hui
OBJECT: Hemangioblastomas with enhanced cyst wall represent a rare radiologic presentation of hemangioblastomas with poor understandings. We aimed to summarize the clinical and radiological features, important differential diagnosis, surgical strategy and clinical outcome of this rare entity. METHODS: From June 2008 to March 2017, twelve patients suffered from cystic hemangioblastomas presenting with enhanced wall thickness on MRI were treated in our department...
September 1, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28862551/isolated-abducens-nerve-palsy-associated-with-subarachnoid-hemorrhage-a-localizing-sign-of-ruptured-posterior-inferior-cerebellar-artery-aneurysms
#17
Jan-Karl Burkhardt, Ethan A Winkler, George F Lasker, John K Yue, Michael T Lawton
OBJECTIVE Compressive cranial nerve syndromes can be useful bedside clues to the diagnosis of an enlarging intracranial aneurysm and can also guide subsequent evaluation, as with an acute oculomotor nerve (cranial nerve [CN] III) palsy that is presumed to be a posterior communicating artery aneurysm and a surgical emergency until proven otherwise. The CN VI has a short cisternal segment from the pontomedullary sulcus to Dorello's canal, remote from most PICA aneurysms but in the hemodynamic pathway of a rupturing PICA aneurysm that projects toward Dorello's canal...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28852709/ataxia-pancytopenia-syndrome-with-samd9l-mutations
#18
Sorina Gorcenco, Jonna Komulainen-Ebrahim, Karin Nordborg, Maria Suo-Palosaari, Sten Andréasson, Johanna Krüger, Christer Nilsson, Ulrika Kjellström, Elisa Rahikkala, Dominik Turkiewicz, Mikael Karlberg, Lars Nilsson, Jörg Cammenga, Ulf Tedgård, Josef Davidsson, Johanna Uusimaa, Andreas Puschmann
OBJECTIVE: We describe the neurologic, neuroradiologic, and ophthalmologic phenotype of 1 Swedish and 1 Finnish family with autosomal dominant ataxia-pancytopenia (ATXPC) syndrome and SAMD9L mutations. METHODS: Members of these families with germline SAMD9L c.2956C>T, p.Arg986Cys, or c.2672T>C, p.Ile891Thr mutations underwent structured interviews and neurologic and ophthalmologic examinations. Neuroimaging was performed, and medical records were reviewed...
October 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28799869/predictive-factors-of-medullary-infarction-after-endovascular-internal-trapping-using-coils-for-vertebral-artery-dissecting-aneurysms
#19
Masanori Aihara, Isao Naito, Tatsuya Shimizu, Masahiro Matsumoto, Ken Asakura, Naoko Miyamoto, Yuhei Yoshimoto
OBJECTIVE The first choice of treatment in cases of vertebral artery dissecting aneurysms (VADAs) is endovascular internal trapping (EIT) of the dissecting segment using coils. However, this procedure carries the risk of medullary infarction, and the risk factors for this complication are not well understood. This study investigated the risk factors causing medullary infarction. METHODS One hundred patients who underwent EIT for VADAs were included in this study. Ninety-three patients presented with subarachnoid hemorrhage...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28790218/-an-extracranial-aneurysm-in-the-distal-posterior-inferior-cerebellar-artery-located-at-the-tonsillomedullary-segment-case-report-and-review-of-the-literature
#20
Nao Shimooka, Shigenori Taketsuna, Shiromaru Ishida, Kensaku Senda, Masato Kawai
We report a rare case of subarachnoid hemorrhage(SAH)due to ruptured extracranial aneurysm originating at the caudal loop of the left posterior inferior cerebellar artery(PICA). A 50-year-old woman presented with severe headache and mild consciousness disturbance. Computed tomography(CT)revealed SAH and intraventricular hemorrhage. Vertebral angiography showed an extracranial aneurysm located on the tonsillomedullary segment of the left PICA. During the surgery, no vessel branches were confirmed near the aneurysm, and the aneurysm was successfully clipped through suboccipital craniotomy with C1 laminectomy...
August 2017: No Shinkei Geka. Neurological Surgery
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