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Cavernous malformation

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https://www.readbyqxmd.com/read/28432261/ccm2-and-pak4-act-downstream-of-atrial-natriuretic-peptide-signaling-to-promote-cell-spreading
#1
Koichi Miura, Takashi Nojiri, Yoshiharu Akitake, Koji Ando, Shigetomo Fukuhara, Masahiro Zenitani, Toru Kimura, Jun Hino, Mikiya Miyazato, Hiroshi Hosoda, Kenji Kangawa
Atrial natriuretic peptide (ANP) is a cardiac hormone released by the atrium in response to stretching forces. Via its receptor, guanylyl cyclase-A (GC-A), ANP maintains cardiovascular homeostasis by exerting diuretic, natriuretic, and hypotensive effects mediated in part by endothelial cells. Both in vivo and in vitro , ANP enhances endothelial barrier function by reducing RhoA activity and reorganizing the actin cytoskeleton. We established mouse endothelial cells that stably express GC-A, and used them to analyze the molecular mechanisms responsible for actin reorganization...
April 21, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28413738/high-energy-trauma-precipitating-intramedullary-cavernous-malformation-hemorrhage-a-possible-underreported-mechanism
#2
Pedro Aguilar-Salinas, Douglas Gonsales, Leonardo B Brasiliense, Eric Sauvageau, Ricardo A Hanel
Cavernous malformations are uncommon vascular lesions with an estimated prevalence of 0.5% in the general population. Intramedullary cavernous malformations (ICM) represent a rare subset of lesions, which account for approximately 5% of all cavernous malformations. The annual risk of hemorrhage in ICMs has been reported to range from 1.4 to 6.8%. Most patients are diagnosed with neurological dysfunction secondary to ICM hemorrhage and little is known about the inciting events that lead to hemorrhage. A few studies have suggested that minor and major trauma or even intense exertion may increase the risk of hemorrhage...
March 13, 2017: Curēus
https://www.readbyqxmd.com/read/28402473/cavernous-malformation-associated-with-arterialized-developmental-venous-anomaly-a-case-report
#3
Kenta Nakase, Yasushi Motoyama, Tokiko Nakai, Yasuhiro Takeshima, Ichiro Nakagawa, Young-Su Park, Chiho Ohbayashi, Hiroyuki Nakase
BACKGROUND AND IMPORTANCE: Formation of cavernous malformations (CMs) has been recognized to be associated with developmental venous anomaly (DVA) by many authors. Hemodynamic stress due to venous outflow restriction could be hypothesized as a cause. On the other hand, a rare subgroup of DVA with an arterial component has been reported as likely to hemorrhage or be symptomatic. Cases of arterialized DVAs reported previously have not been associated with the presence of CM. CLINICAL PRESENTATION: We present herein a case report of arterialized DVA in the brainstem with repeated cerebellar hemorrhage...
April 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28399335/recent-advances-in-orbital-tumors-a-review-of-publications-from-2014-2016
#4
Santosh G Honavar, Fairooz P Manjandavida
The aim of this review article is to provide an update of the current literature on orbital tumors. The authors conducted a PubMed literature search of English language articles published between January 2014 and December 2016 using the following search items: orbit, tumors, lacrimal gland, lymphoma, hemangioma, lymphangioma. The authors included reviews, original articles, case series, and case reports with relevant new information. There is new information about the clinical spectrum of orbital tumors, capillary hemangioma, cavernous hemangioma, lymphangioma, orbital venous malformation, lacrimal gland tumors, and orbital lymphoma...
March 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28391022/reliable-the-value-of-early-postoperative-magnetic-resonance-imaging-after-ccm-surgery
#5
Bixia Chen, Sophia Göricke, Karsten Wrede, Ramazan Jabbarli, Max Jaegersberg, Ulrich Sure, Philipp Dammann
BACKGROUND: Cerebral cavernous malformations (CCM) can cause intracerebral hemorrhage. The lesions themselves are frequently associated with perifocal hemosiderin deposits due to repetitive microhemorrhages. Main indications for a surgical treatment are recurrent symptomatic hemorrhages or cavernoma-related epilepsy (CRE). After surgical resection, follow-up MR-imaging is usually performed to confirm a) the complete resection of the CCM and, especially in cases of CRE, b) the complete resection of the hemosiderin deposits...
April 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28388986/cerebral-cavernous-malformation-when-the-key-to-diagnosis-is-on-the-skin
#6
M M Escudero-Góngora, A Bauzá, A Giacaman, A Martín-Santiago
No abstract text is available yet for this article.
April 4, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28387823/synopsis-of-guidelines-for-the-clinical-management-of-cerebral-cavernous-malformations-consensus-recommendations-based-on-systematic-literature-review-by-the-angioma-alliance-scientific-advisory-board-clinical-experts-panel
#7
Amy Akers, Rustam Al-Shahi Salman, Issam A Awad, Kristen Dahlem, Kelly Flemming, Blaine Hart, Helen Kim, Ignacio Jusue-Torres, Douglas Kondziolka, Cornelia Lee, Leslie Morrison, Daniele Rigamonti, Tania Rebeiz, Elisabeth Tournier-Lasserve, Darrel Waggoner, Kevin Whitehead
BACKGROUND: Despite many publications about cerebral cavernous malformations (CCMs), controversy remains regarding diagnostic and management strategies. OBJECTIVE: To develop guidelines for CCM management. METHODS: The Angioma Alliance ( www.angioma.org ), the patient support group in the United States advocating on behalf of patients and research in CCM, convened a multidisciplinary writing group comprising expert CCM clinicians to help summarize the existing literature related to the clinical care of CCM, focusing on 5 topics: (1) epidemiology and natural history, (2) genetic testing and counseling, (3) diagnostic criteria and radiology standards, (4) neurosurgical considerations, and (5) neurological considerations...
April 7, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28387648/dysmorphic-features-frontal-cerebral-cavernoma-and-hyperglycemia-in-a-girl-with-a-de-novo-deletion-of-7-23-mb-in-region-7p13-p12-1
#8
Gilberto Pérez López, Beatriz Villafuerte Quispe, María José Cabrejas Núñez, Luis Castaño, Raquel Barrio
We describe the case of a 7 year old girl referred to our Diabetes Unit for hyperglycemia associated to facial dysmorphic features, intellectual disability and cerebral cavernomas, who was initially diagnosed with type 1 diabetes mellitus (positive anti-IA2 antibody and HLA DR3/DR4/DQ2). In follow up, due to the evolution of the diabetes (very good metabolic control with low insulin dose and negative IA-2 antibodies - samples analyzed in two different laboratories-), first clinical suspicion was GCK-related Maturity-Onset Diabetes of the Young (MODY 2) by persistent mild hyperglycemia in the fasting state, which was substantiated in Multiplex Ligation-dependent Probe Amplification (MLPA)...
April 7, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28377258/cavernoma-new-insights-from-an-unusual-case
#9
G Sokratous, I Ughratdar, R Selway, Safa Al-Sarraj, K Ashkan
Rapid growth in cerebral cavernous malformation is rare. We present the case of a 71 year old patient with known multiple cavernomas over many years in whom one lesion showed rapid expansion in size. Histological examination revealed co-existence of glioblastoma within the cavernoma. We review the literature for similar cases and discuss the potential mechanisms underlying this phenomenon. Review of the literature revealed four cases with known cerebral cavernous malformations that have later developed, at the same site, a high grade glioma...
April 1, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28371279/ephb4-forward-signalling-mediates-angiogenesis-caused-by-ccm3-pdcd10-ablation
#10
Chao You, Kai Zhao, Philipp Dammann, Kathy Keyvani, Ilonka Kreitschmann-Andermahr, Ulrich Sure, Yuan Zhu
CCM3, also named as PDCD10, is a ubiquitous protein expressed in nearly all tissues and in various types of cells. It is essential for vascular development and post-natal vessel maturation. Loss-of-function mutation of CCM3 predisposes for the familial form of cerebral cavernous malformation (CCM). We have previously shown that knock-down of CCM3 stimulated endothelial angiogenesis via impairing DLL4-Notch signalling; moreover, loss of endothelial CCM3 stimulated tumour angiogenesis and promoted tumour growth...
April 1, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28368723/a-retrospective-review-of-cases-preoperatively-diagnosed-by-radiologic-imaging-as-cavernous-venous-malformations
#11
Anupam Jayaram, Liza M Cohen, Gary S Lissner, Achilles G Karagianis
The purpose of this study is to examine orbital lesions identified on preoperative radiologic imaging as cavernous venous malformations (CVMs), identify their imaging characteristics, and determine if these may help differentiate CVMs from other intraorbital masses. An IRB-approved retrospective chart review over 30 years was undertaken identifying lesions "consistent with cavernous hemangioma" on radiologic studies, which were subsequently surgically resected with a tissue diagnosis. All radiologic images (CT and MRI) obtained preoperatively were re-reviewed by a single masked neuroradiologist...
April 3, 2017: Orbit
https://www.readbyqxmd.com/read/28368503/contribution-of-endothelial-to-mesenchymal-transition-to-the-pathogenesis-of-human-cerebral-and-orbital-cavernous-malformations
#12
Shigeki Takada, Masato Hojo, Kenji Tanigaki, Susumu Miyamoto
BACKGROUND: The analysis of gene-targeted mouse mutants has demonstrated that endothelial-to-mesenchymal transition (EndMT) is crucial to the onset and progression of cerebral cavernous malformations (CMs). It has also been shown that Notch and ephrin/Eph signaling are involved in EndMT. However, their roles in the pathogenesis of human intracranial CMs remain unclear. OBJECTIVE: To elucidate the contribution of EndMT, the Notch pathway, and ephrin-B2/EphB4 signaling to the pathogenesis of human intracranial CMs...
March 28, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28362238/supratentorial-cavernous-malformations-adjacent-to-the-corticospinal-tract-surgical-outcomes-and-predictive-value-of-diffusion-tensor-imaging-findings
#13
Yuanxiang Lin, Fuxin Lin, Dezhi Kang, Yuming Jiao, Yong Cao, Shuo Wang
OBJECTIVE Diffusion tensor imaging (DTI) findings may facilitate clinical decision making in patients with supratentorial cavernous malformations adjacent to the corticospinal tract (CST-CMs). The objective of this study was to determine the predictive value of preoperative DTI findings for surgical outcomes in patients with CST-CMs. METHODS A prospectively maintained database of patients with CM referred to the authors' hospital between September 2012 and October 2015 was reviewed to identify all consecutive surgically treated patients with CST-CM...
March 31, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28345735/-supratentorial-cavernous-malformations-in-an-argentinian-institution-experience-with-surgical-treatment
#14
G E Vergara, A Cervio, M Farez, R Mormandi, S Condomi-Alcorta, J Salvat
INTRODUCTION: Cavernous malformations are vascular malformations of the central nervous system formed by a group of capillaries not covered by pia mater and communicated to the vascular system at very low pressure with very slow flow. Surgery or radiosurgery are the treatment modalities. AIMS: To analyze our results after surgical treatment of supratentorial cavernous malformations, reviewing clinical presentation, surgical indications and postoperative complications...
April 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28345540/epidemiological-features-of-nontraumatic-spontaneous-subarachnoid-hemorrhage-in-china-a-nationwide-hospital-based-multicenter-study
#15
Jian-Ping Song, Wei Ni, Yu-Xiang Gu, Wei Zhu, Liang Chen, Bin Xu, Bin Leng, Yan-Long Tian, Ying Mao
BACKGROUND: Nontraumatic spontaneous subarachnoid hemorrhage (SAH) is associated with a high mortality. This study was conducted to investigate the epidemiological features of nontraumatic spontaneous SAH in China. METHODS: From January 2006 to December 2008, the clinical data of patients with nontraumatic SAH from 32 major neurosurgical centers of China were evaluated. Emergent digital subtraction angiography (DSA) was performed for the diagnosis of SAH sources in the acute stage of SAH (≤3 days)...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28341499/renal-arteriovenous-malformations-a-rare-vascular-cause-of-back-pain
#16
Tazo Inui, David Frankel
OBJECTIVE: Renal arteriovenous malformation (AVM) is a very rare phenomenon (fewer than 200 cases in the literature), most commonly (75%) presenting with hematuria in young women. Renal AVMs may be cirsoid (multi-branched) or cavernous, with cirsoid morphology predominating 3:1. The historical treatment is partial nephrectomy. Best endovascular therapy is divided among many options. We present 2 cases of large renal AVMs treated with single Amplatzer plugs. METHODS: During a 2-year period (2014-15), 2 patients presented for vascular evaluation of renal AVMs found incidentally on workup for non-specific abdominal and back pain...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28327920/of-bubbles-and-layers-which-cerebral-cavernous-malformations-are-most-difficult-to-dissect-from-surrounding-eloquent-brain-tissue
#17
Philipp Dammann, Karsten Wrede, Ramazan Jabbarli, Oliver Müller, Christoph Mönninghoff, Michael Forsting, Ulrich Sure
BACKGROUND: Cerebral cavernous malformations (CCM) may lead to repetitive intracerebral hemorrhage. In selected cases, a surgical resection is indicated. OBJECTIVE: To identify magnetic resonance imaging (MRI) features of CCM that correlate with the difficulty of dissection and postoperative outcome. METHODS: This study prospectively analyzed pre- and postoperative MRI features, intraoperative findings (surgical questionnaire), and postoperative outcome of 41 patients with eloquent CCM...
March 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28319946/rebleeding-and-outcome-in-patients-with-symptomatic-brain-stem-cavernomas
#18
Antonio Arauz, Hernán M Patiño-Rodriguez, Mónica Chavarria-Medina, Mayra Becerril, Gabriel Mauricio Longo, Edgar Nathal
PURPOSE: We sought to evaluate the long-term functional outcomes and identify the potential risk factors for rebleeding in patients with brain stem cavernous malformations (BCMs) who presented with hemorrhages and were surgically or conservatively treated and prospectively monitored. METHODS: From January 1990 to July 2015, we included patients with first hemorrhagic episodes secondary to single BCMs. Modified Rankin score (mRS) was used for neurological status assessment...
March 21, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28318403/familial-cerebral-cavernous-malformations-are-associated-with-adrenal-calcifications-on-ct-scans-an-imaging-biomarker-for-a-hereditary-cerebrovascular-condition
#19
Corinne D Strickland, Steven C Eberhardt, Mary R Bartlett, Jeffrey Nelson, Helen Kim, Leslie A Morrison, Blaine L Hart
Purpose To determine if adrenal calcifications seen at computed tomography (CT) are associated with familial cerebral cavernous malformations (fCCMs) in carriers of the CCM1 Common Hispanic Mutation. Materials and Methods This study was approved by the institutional review board. The authors retrospectively reviewed abdominal CT scans in 38 patients with fCCM, 38 unaffected age- and sex-matched control subjects, and 13 patients with sporadic, nonfamilial cerebral cavernous malformation (CCM). The size, number, and laterality of calcifications and the morphologic characteristics of the adrenal gland were recorded...
March 20, 2017: Radiology
https://www.readbyqxmd.com/read/28303206/post-irradiation-lumbosacral-radiculopathy-associated-with-multiple-cavernous-malformations-of-the-cauda-equina-case-report-and-review-of-the-literature
#20
Doniel Drazin, Ari Kappel, Stefan Withrow, Tiffany Perry, Ray Chu, Surasak Phuphanich
BACKGROUND: Multiple radiation-induced cavernous malformations of the cauda equina are extremely rare. A review of the literature suggested that the post-irradiation lumbosacral radiculopathy in our patient was most likely associated with a diagnosis of multiple radiation-induced cavernous malformations of the cauda equina. CASE DESCRIPTION: A 76-year-old man with a remote history of abdominal radiation therapy presented with a 6-month history of progressively worsening right foot drop and balance impairment...
2017: Surgical Neurology International
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