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Convexity hemorrhage

Duangnapa Roongpiboonsopit, Andreas Charidimou, Christopher M William, Arne Lauer, Guido J Falcone, Sergi Martinez-Ramirez, Alessandro Biffi, Alison Ayres, Anastasia Vashkevich, Oluwole O Awosika, Jonathan Rosand, M Edip Gurol, Scott B Silverman, Steven M Greenberg, Anand Viswanathan
OBJECTIVE: To identify predictors of early lobar intracerebral hemorrhage (ICH) recurrence, defined as a new ICH within 6 months of the index event, in patients with cerebral amyloid angiopathy (CAA). METHODS: Participants were consecutive survivors (age ≥55 years) of spontaneous symptomatic probable or possible CAA-related lobar ICH according to the Boston criteria, drawn from an ongoing single-center cohort study. Neuroimaging markers ascertained in CT or MRI included focal (≤3 sulci) or disseminated (>3 sulci) cortical superficial siderosis (cSS), acute convexity subarachnoid hemorrhage (cSAH), cerebral microbleeds, white matter hyperintensities burden and location, and baseline ICH volume...
September 30, 2016: Neurology
Björn Reuter, Alexander Venus, Patrick Heiler, Lothar Schad, Anne Ebert, Michael G Hennerici, Saskia Grudzenski, Marc Fatar
BACKGROUND: Cerebral amyloid angiopathy (CAA) is characterized by extracellular deposition of amyloid β (Aβ) around cerebral arteries and capillaries and leads to an increased risk for vascular dementia, spontaneous lobar hemorrhage, convexal subarachnoid hemorrhage, and transient focal neurological episodes, which might be an indicator of imminent spontaneous intracerebral hemorrhage. In CAA cerebral microbleeds (cMBs) with a cortical/juxtacortical distribution are frequently observed in standard magnetic resonance imaging (MRI)...
2016: Frontiers in Aging Neuroscience
Mehmet A Topcuoglu, Aneesh B Singhal
BACKGROUND AND PURPOSE: To compare hemorrhagic and nonhemorrhagic reversible cerebral vasoconstriction syndromes (RCVS) with a view to understand mechanisms. METHODS: This single-center retrospective study included 162 patients with RCVS. Clinical, brain imaging, and angiography data were analyzed. RESULTS: The mean age was 44±13 years, 78% women. Hemorrhages occurred in 43% including 21 patients with intracerebral hemorrhage (ICH) and 62 with convexal subarachnoid hemorrhage (cSAH)...
July 2016: Stroke; a Journal of Cerebral Circulation
Kaleigh M Fetcko, Benjamin K Hendricks, John Scott, Aaron A Cohen-Gadol
This article describes a patient with atraumatic multifocal intracerebral, subarachnoid, and bilateral frontal convexity acute subdural hematomas. The patient is a 46-year-old Caucasian man who presented with a spontaneous severe progressive headache. Following a description of the case, this article reviews the reported incidence, proposed etiology, and current management strategies for multifocal spontaneous intracerebral hemorrhage.
September 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Yukiko Ito, Hiroyuki Isayama, Yousuke Nakai, Gyoutane Umefune, Tatsuya Sato, Saori Nakahara, Junko Suwa, Keiichi Kato, Ryo Nakata
Endoscopic ultrasound (EUS)-guided intervention has been established as a safe, effective and minimally invasive procedure for various diseases in adults, but there have been limited reports in pediatric patients. Herein, we report our experience with successful EUS-guided drainage of an intraabdominal abscess in a 1-year-old infant concomitant with disseminated intravascular coagulation. The abscess was punctured via the stomach using a standard, convex-type echoendoscope, and the patient's condition improved after naso-cystic catheter placement...
May 23, 2016: Gut and Liver
Ajeet Gordhan
During the surgical resection of a convexity meningioma in a 63-year-old woman, an uncontrollable active hemorrhage from the operative bed was arrested with microcatheter N-butyl cyanoacrylate (NBCA) embolization after superselective angiography. To date, an uncontrollable neurosurgical intraprocedural hemorrhage terminated by NBCA embolization has not been previously reported. The embolization risk relative to the benefit needs to be carefully considered prior to the surgical removal of a meningioma. This report emphasizes the potential value of embolization with NBCA for arresting active bleeding intraoperatively...
January 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Valérie Wolff, Anne Ducros
Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by severe headache and diffuse segmental intracranial arterial constriction that resolve within three months. Stroke, which is the major complication of RCVS, can result in persistent neurological disability, and rarely causes death. Diagnosis of RCVS early in the clinical course might improve outcomes. Although recurrent thunderclap headache is the clinical hallmark of RCVS, the absence of such a pattern should not lead to discard the diagnosis...
April 2016: Headache
Ralph Rahme, Nilesh A Vyas, John F Hamilton
BACKGROUND: Ischemic stroke is being increasingly recognized as a possible cause of spontaneous isolated convexity subarachnoid hemorrhage (SAH). However, it is a much less established cause of cisternal, aneurysmal-like SAH. Only 3 case reports of concomitant cisternal SAH and perforator infarcts exist in the literature, raising the possibility of perforating artery rupture as a potential mechanism. In contrast, embolic stroke is not recognized as a cause of aneurysmal-like SAH. CASE DESCRIPTION: In 2 patients with embolic cerebral infarctions mimicking intracranial aneurysm rupture, diagnosis was confirmed by magnetic resonance imaging with diffusion-weighted imaging after cerebral angiography failed to reveal an underlying vascular lesion...
July 2016: World Neurosurgery
Syunsuke Seki, Tomoya Kamide, Akira Tamase, Kentaro Mori, Kunio Yanagimoto, Motohiro Nomura
Intraparenchymal hemorrhage from dural metastasis of breast cancer is rare. A 54-year-old woman without a significant medical history showed altered consciousness and left hemiparesis. Radiological examination revealed an extra-axial mass in the right middle fossa with intraparenchymal hemorrhage and another mass invading the skull in the right parietal region. The pre-operative diagnosis was a sphenoid ridge meningioma presenting with intraparenchymal hemorrhage and another meningioma in the convexity. The tumors and hematoma were removed...
June 2016: Neuroradiology Journal
Kiyoharu Shimizu, Kiyoshi Yuki, Takashi Sadatomo, Takeshi Hara, Hideo Ohba, Kaoru Kurisu
The risk of anticoagulant-associated intracranial hemorrhage(ICH)is relatively low in patients treated with non-vitamin K antagonist oral anticoagulants(NOAC). The anticoagulant-associated ICH comprises mainly intraparenchimal hemorrhage. Subdural hematoma and subarachnoid hemorrhage(SAH)are rare complications after treatment with NOAC, trauma being the most common cause for these two types of ICH. We report a case of non-traumatic convexal SAH(cSAH)associated with Apixavan. A 68-year-old man with repeated history of cerebral embolism with cardiogenic cause presented with weakness of the lower limbs...
March 2016: No Shinkei Geka. Neurological Surgery
Lionel Calviere, Victor Cuvinciuc, Nicolas Raposo, Alexandre Faury, Christophe Cognard, Vincent Larrue, Alain Viguier, Fabrice Bonneville
BACKGROUND: The specificities of acute convexity subarachnoid hemorrhage (cSAH) related to cerebral amyloid angiopathy (CAA) and its evolution are not well known. We aimed to describe the clinicoradiological pattern, the magnetic resonance imaging (MRI) evolution, and the risk of recurrent bleeding in such patients. METHODS: Among consecutive patients with an acute nontraumatic cSAH, subjects with available MRI who meet the modified Boston criteria for probable CAA were included...
May 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
J Graff-Radford, J E Fugate, J Klaas, K D Flemming, R D Brown, A A Rabinstein
BACKGROUND AND PURPOSE: The full spectrum of causes of convexal subarachnoid hemorrhage (cSAH) requires further investigation. Therefore, our objective was to describe the spectrum of clinical and imaging features of patients with non-traumatic cSAH. METHODS: A retrospective observational study of consecutive patients with non-traumatic cSAH was performed at a tertiary referral center. The underlying cause of cSAH was characterized and clinical and imaging features that predict a specific etiology were identified...
May 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
Rafał Z Słapa, Anna A Kasperlik-Załuska, Bartosz Migda, Maciej Otto, Katarzyna Dobruch-Sobczak, Wiesław S Jakubowski
AIM: The aim of the research was to assess the echogenicity of benign adrenal focal lesions using new ultrasound techniques. MATERIAL AND METHOD: 34 benign adrenal masses in 29 patients were analyzed retrospectively. The examinations were conducted using Aplio XG (Toshiba, Japan) ultrasound scanner with a convex probe 1-6 MHz in the B-mode presentation with the combined use of new ultrasound techniques: harmonic imaging and spatial compound sonography. The size of the adrenal tumors, their echogenicity and homogeneity were analyzed...
December 2015: Journal of Ultrasonography
Akira Tempaku, Hidetoshi Ikeda, Kazumi Nitta
Cerebral amyloid angiopathy (CAA) is observed in most cases of nonhypertensive subcortical hemorrhage involving elderly patients. We herein describe the case of a female in whom a convexal subarachnoid hemorrhage was observed at 55 years of age. The cerebral hemorrhage occurred repeatedly; however, no obvious vascular lesions were observed on a cerebral angiography, and no signs of microbleeding or lesions in the deep white matter were identified on magnetic resonance imaging (MRI). Partial excision of the right frontal cortex and hematoma evacuation were performed, and histopathological examination showed deposition of an acidophilic substance with positive staining for Direct Fast Scarlet (DFS) in the cerebral vascular wall...
2015: Journal of Rural Medicine: JRM
Jacob R Hascalovici, Mellanie V Springer, Matthew S Robbins
No abstract text is available yet for this article.
November 24, 2015: Headache
Hosung Kim, Dawn Gano, Mai-Lan Ho, Xiaoyue M Guo, Alisa Unzueta, Christopher Hess, Donna M Ferriero, Duan Xu, A James Barkovich
Premature birth globally affects about 11.1% of all newborns and is a risk factor for neurodevelopmental disability in surviving infants. Histology has suggested that hindbrain subdivisions grow differentially, especially in the third trimester. Prematurity-related brain injuries occurring in this period may selectively affect more rapidly developing areas of hindbrain, thus accompanying region-specific impairments in growth and ultimately neurodevelopmental deficits. The current study aimed to quantify regional growth of the cerebellum and the brainstem in preterm neonates (n = 65 with individually multiple scans)...
February 2016: Human Brain Mapping
Benan Çağlayan, Aydın Yılmaz, Semra Bilaçeroğlu, Sevda Şener Cömert, Nilgün Y Demirci, Banu Salepçi
BACKGROUND: Infrequent serious complications of convex-probe endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) have been reported. The aim of this study was to assess serious complications related to convex-probe EBUS-TBNA and to determine the complication rate in a large group of subjects. METHODS: In this retrospective study, a 15-item questionnaire on features of cases with EBUS-TBNA complications was sent to experienced bronchoscopists performing convex-probe EBUS-TBNA at 3 pulmonary centers...
February 2016: Respiratory Care
Zhongzhao Teng, Jianmin Yuan, Jiaxuan Feng, Yongxue Zhang, Adam J Brown, Shuo Wang, Qingsheng Lu, Jonathan H Gillard
Calculating high stress concentration within carotid atherosclerotic plaques has been shown to be complementary to anatomical features in assessing vulnerability. Reliability of stress calculation may depend on the constitutive laws/strain energy density functions (SEDFs) used to characterize tissue material properties. Different SEDFs, including neo-Hookean, one-/two-term Ogden, Yeoh, 5-parameter Mooney-Rivlin, Demiray and modified Mooney-Rivlin, have been used to describe atherosclerotic tissue behavior. However, the capacity of SEDFs to fit experimental data and the difference in the stress calculation remains unexplored...
November 5, 2015: Journal of Biomechanics
Monique Boukobza, Isabelle Crassard, Marie-Germaine Bousser, Hugues Chabriat
INTRODUCTION: The main objectives of the present study are to assess the incidence of cerebral venous thrombosis (CVT) presenting as isolated subarachnoid hemorrhage (SAH) and to determine the occurrence of cortical venous thrombosis (CoVT). METHODS: Among 332 patients with CVT, investigated with the same CT and MR standardized protocol, 33 (10 %) presented with SAH, associated in 11 cases with hemorrhagic infarct or intracerebral hemorrhage. This study is based on 22 cases of CVT presenting as SAH in the absence of hemorrhagic brain lesion...
January 2016: Neuroradiology
Emma C Cheshire, Roger D G Malcomson, Shiju Joseph, Mike J B Biggs, David Adlam, Guy N Rutty
PURPOSE: In cases of suspected abusive head trauma, a thorough and systematic study of the cranium and its contents is essential, preferably using the best available methods for observing the brain and its coverings. Building upon recent developments in skull bone removal techniques in infant autopsies, we have assessed the use of two optical clearing agents (OCAs), glycerol and mannitol, on pediatric dura mater in an attempt to increase the transparency of this tissue and thereby enhance the post-mortem assessment of infant head injuries, particularly subdural hematomas...
September 2015: Forensic Science, Medicine, and Pathology
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