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Venous malformation

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https://www.readbyqxmd.com/read/28238417/enhanced-expression-of-programmed-cell-death-1-pd-1-protein-in-benign-vascular-anomalies
#1
Clarissa N Amaya, Frank H Wians, Brad A Bryan, Alireza Torabi
Programmed cell death 1 (PD-1) and its ligands have been shown to play a significant role in evasion of malignant tumour cells from the immune system. Last year, the United States Food and Drug Administration (FDA) approved anti-PD-1 inhibitors for treatment of non-small cell lung carcinoma and recently has approved anti-PD-L1 blocker for treatment of metastatic urothelial cell carcinoma. However, the role that the immune system might have on benign tumours including vascular anomalies has received less attention...
February 23, 2017: Pathology
https://www.readbyqxmd.com/read/28235957/cerebral-arteriovenous-malformation-flow-is-associated-with-venous-intimal-hyperplasia
#2
Sophia F Shakur, Ahmed E Hussein, Sepideh Amin-Hanjani, Tibor Valyi-Nagy, Fady T Charbel, Ali Alaraj
BACKGROUND AND PURPOSE: The pathogenesis of venous intimal hyperplasia and venous outflow stenosis associated with cerebral arteriovenous malformation (AVM) draining veins is poorly understood. We sought to determine the relationship between maximum vein wall thickness and AVM flow. METHODS: Patients who underwent AVM surgical resection and had flow measured before treatment using quantitative magnetic resonance angiography were retrospectively reviewed. Specimens were mounted on slides and stained with elastin special stain...
February 24, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28235955/validation-of-cerebral-arteriovenous-malformation-hemodynamics-assessed-by-dsa-using-quantitative-magnetic-resonance-angiography-preliminary-study
#3
Sophia F Shakur, Denise Brunozzi, Ahmed E Hussein, Andreas Linninger, Chih-Yang Hsu, Fady T Charbel, Ali Alaraj
BACKGROUND: The hemodynamic evaluation of cerebral arteriovenous malformations (AVMs) using DSA has not been validated against true flow measurements. OBJECTIVE: To validate AVM hemodynamics assessed by DSA using quantitative magnetic resonance angiography (QMRA). MATERIALS AND METHODS: Patients seen at our institution between 2007 and 2016 with a supratentorial AVM and DSA and QMRA obtained before any treatment were retrospectively reviewed...
February 24, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28216977/implications-of-small-bowel-transit-time-in-the-detection-rate-of-capsule-endoscopy-a-multivariable-multicenter-study-of-patients-with-obscure-gastrointestinal-bleeding
#4
Carlo Maria Girelli, Marco Soncini, Emanuele Rondonotti
AIM: To define the role of small-bowel transit time in the detection rate of significant small-bowel lesions. METHODS: Small-bowel capsule endoscopy records, prospectively collected from 30 participating centers in the Lombardy Registry from October 2011 to December 2013, were included in the study if the clinical indication was obscure gastrointestinal bleeding and the capsule reached the cecum. Based on capsule findings, we created two groups: P2 (significant findings) and P0-1 (normal/negligible findings)...
January 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28212190/endothelial-cell-disease-emerging-knowledge-from-cerebral-cavernous-malformations
#5
Maria Grazia Lampugnani, Matteo Malinverno, Elisabetta Dejana
PURPOSE OF REVIEW: Endothelial cells dysfunctions are crucial determinants of several human diseases. We review here the most recent reports on endothelial cell defects in cerebral cavernous malformations (CCMs), particularly focusing on adherens junctions. CCM is a vascular disease that affects specifically the venous microvessels of the central nervous system and which is caused by loss-of-function mutation in any one of the three CCM genes (CCM1, 2 or 3) in endothelial cells. The phenotypic result of these mutations are focal vascular malformations that are permeable and fragile causing neurological symptoms and occasionally haemorrhagic stroke...
February 16, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28208940/neurological-disorders-complicating-pregnancy-focus-on-obstetric-outcome
#6
Sandya Renukesh, Lavanya Rai
INTRODUCTION: Neurological disorders in pregnancy can be pregnancy related or can be caused by exacerbation of a pre-existing neurological condition or sometimes may even be detected for the first time during pregnancy in which it might be an incidental finding. The diagnosis and management of the neurological disorders in pregnancy is always a challenging task due to varied symptomatology and risks to the fetus. The evaluation and management should be performed in a stepwise fashion and requires multidisciplinary approach...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28203571/evolutionary-history-of-multiple-dural-fistula
#7
Braulio Martinez-Burbano, Edgar Patricio Correa Diaz, Carolina Jácome Sánchez
Intracranial dural arteriovenous fistulas (DAVFs) are abnormal communications between arteries and veins or dural venous sinuses, which sit between the sheets of the dura. They represent 10% to 15% of intracranial vascular malformations. Clinical manifestations and prognosis depend on the pattern of venous drainage and location. The clinical presentation of DAVF may be mistaken for vascular or nonvascular brain pathologies. For that reason, within the differential diagnosis come a wide range of conditions, such as secondary headaches, encephalopathies, dementias including those with rapid progression, neurodegenerative diseases, inflammatory processes, or tumors typically at the orbital level or in the cavernous sinus...
October 2016: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28194506/treatment-of-type-ii-endoleaks-with-a-novel-agent-precipitating-hydrophobic-injectable-liquid-phil
#8
Amir Helmy, Nadeem Shaida
OBJECTIVE: Endovascular aortic aneurysm repair has become the principle technique used to treat abdominal aortic aneurysms. However, its long-term success is limited by complications, including type II endoleaks from lumbar arteries and the inferior mesenteric artery. Treatment of these endoleaks can be difficult. The most commonly performed procedure is embolisation via mesenteric or iliolumbar vessels. Embolic agents currently used include coils, glue and Onyx, all of which have their limitations...
February 13, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28186446/de-novo-avm-formation-following-venous-sinus-thrombosis-and-prior-avm-resection-in-adults-report-of-2-cases
#9
Siyu Shi, Raghav Gupta, Justin M Moore, Christoph J Griessenauer, Nimer Adeeb, Rouzbeh Motiei-Langroudi, Ajith J Thomas, Christopher S Ogilvy
Brain arteriovenous malformations (AVMs) are traditionally considered congenital lesions, arising from aberrant vascular development during the intrauterine period. Rarely, however, AVMs develop in the postnatal period. Individual case reports of de novo AVM formation in both pediatric and adult patients have challenged the traditional dogma of a congenital origin. Instead, for these cases, a dynamic picture is emerging of AVM growth and development, initially triggered by ischemic and/or traumatic events, coupled with genetic predispositions...
February 10, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28181207/understanding-venous-malformations-of-the-head-and-neck-a-comprehensive-insight
#10
Giacomo Colletti, Anna Maria Ierardi
Venous malformations (VMs) are congenital vascular malformations. They are very often misnamed and thus incorrectly managed. The aim of the present paper is to provide the reader with the most updated literature available and to offer a detailed description of each single aspect of this disease. In detail, the paper discusses the epidemiology, the embryological origins and the physiopathology of VMs. Then, the clinical features of sporadic, inherited and syndromic VMs are discussed. The instrumental diagnosis is presented, and the role of US, CT, MRI and phlebography is pointed out...
March 2017: Medical Oncology
https://www.readbyqxmd.com/read/28169477/localised-intravascular-coagulation-complicating-venous-malformations-in-children-associations-and-therapeutic-options
#11
REVIEW
Kevin Y Zhuo, Susan Russell, Orli Wargon, Susan Adams
Venous malformations are slow-flow congenital vascular malformations that enlarge as the child ages and may be associated with localised intravascular coagulation, a consumptive coagulopathy characterised by elevated D-dimer and decreased fibrinogen levels. The authors review the known correlations between localised intravascular coagulation and venous malformation number, size and planes involved, and call attention to the concept of the progression of localised intravascular coagulopathy as the child ages and their venous malformations enlarge...
February 7, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/28163183/a-femoral-common-vein-aneurysm-in-a-patient-with-neurofibromatosis-syndrome-type-1
#12
Christophe Seinturier, Sophie Blaise, Frédéric Thony, Jean Luc Magne, Gilles Pernod
Neurofibromatosis type I (NFI), also called Von Recklinghausen disease, is an autosomal dominant disease secondary to a genetic mutation on the long arm of chromosome 17. This disorder affects neural crest cells. Cutaneous clinical forms are the most frequent with multiple benign skin neurofibromas, associated with café au lait skin spots and iris hamartomas. Vascular abnormalities in NF1 are rare but have also been well described. The most frequent abnormalities are characterized by arterial aneurysm degeneration, stenosis, and malformations...
February 3, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28157793/ultrasound-guided-subclavian-vein-cannulation-in-low-birth-weight-neonates
#13
Ulrik Lausten-Thomsen, Zied Merchaoui, Cécile Dubois, Sergio Eleni Dit Trolli, Nolwenn Le Saché, Mostafa Mokhtari, Pierre Tissières
OBJECTIVES: Central venous access in critically ill, small infants remains technically challenging even in experienced hands. Several vascular accesses exist, but the subclavian vein is often preferred for central venous catheter insertion in infants where abdominal malformation and/or closure of the vein preclude the use of umbilical venous catheters, as catheterization of the subclavian vein is easier in very short necks than the internal jugular vein for age-related anatomical reasons...
February 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28157750/management-of-unruptured-intracranial-aneurysms-and-cerebrovascular-malformations
#14
Kelly D Flemming, Giuseppe Lanzino
PURPOSE OF REVIEW: Unruptured intracranial aneurysms and vascular malformations are detected more frequently because of the increased use and availability of brain imaging. Management of these entities requires knowledge of which patients are at high risk for hemorrhage and what treatment options are available. This article summarizes the epidemiology, natural history, and management strategies for unruptured intracranial aneurysms, arteriovenous malformations, cavernous malformations, developmental venous anomalies, and capillary telangiectasias...
February 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28151866/acute-arterial-embolism-of-left-lower-extremity-caused-by-paradoxical-embolism-in-ebstein-s-anomaly-a-case-report
#15
Jun-Sheng Li, Jie Ma, Zi-Xing Yan, Dong-Ming Cheng, Liang Chang, Hai-Chun Zhang, Jiang-Yan Liu
INTRODUCTION: Ebstein's anomaly is a benign and stable congenital heart disease for asymptomatic patients. Despite a low incidence of Ebstein's anomaly (EA), patients' quality of life can be badly affected by EA without positive surgical intervention. Especially EA is associated with other congenital heart disease, such as the atrial septal defect, patent foramen ovale, and arterial embolism exclude other reasons, it is often considered to be the consequence of paradoxical embolism, and surgical intervention must be conducted...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28151094/spontaneous-resolution-of-ruptured-intracranial-pial-arteriovenous-fistula-following-spinal-surgery
#16
Mark K Lyons, Joseph M Hoxworth, Jamal McClendon, Chandan X Krishna, Naresh P Patel
Pial arteriovenous fistulae (AVFs) are rare vascular abnormalities that are distinct from arteriovenous malformations and dural AVFs. These vascular lesions have been linked with trauma, ischemic syndromes, venous thrombotic diseases, and intracranial surgical procedures. In this report we describe a case of an intracranial ruptured pial AVF immediately following uneventful spinal surgery in an elderly patient with subsequent spontaneous resolution. He was a previous heavy smoker with a 60-pack-year history and alcohol abuse...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28141624/dilated-superior-ophthalmic-vein-clinical-and-radiographic-features-of-113-cases
#17
Christopher R Adam, Carol L Shields, Justin Gutman, H Joon Kim, Brent Hayek, John W Shore, Alexandra Braunstein, Flora Levin, Bryan J Winn, Ivan Vrcek, Ronald Mancini, Craig Linden, Christina Choe, Mithra Gonzalez, David Altschul, Santiago Ortega-Gutierrez, Srinivasan Paramasivam, Johanna T Fifi, Alejandro Berenstein, Vikram Durairaj, Roman Shinder
PURPOSE: Dilated superior ophthalmic vein (SOV) is an uncommon radiographic finding. The authors review the presentation, etiology, radiography, and visual implications of 113 patients with dilated SOV. METHODS: An observational case series and multicenter retrospective chart review were conducted. There were 113 patients with a dilated SOV. Outcome measures included patient demographics, clinical features, radiographic findings, diagnosis, and treatment, and treatment outcomes were assessed...
January 30, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28141567/blue-rubber-bleb-nevus-syndrome-promising-response-to-sirolimus
#18
Canan Akyuz, Hilal Susam-Sen, Burca Aydin
BACKGROUND: Blue rubber bleb nevus syndrome is a rare disease involving venous malformations. CASE CHARACTERISTICS: We present a 6-year-old female with the syndrome, and consumptive coagulopathy. INTERVENTION/OUTCOME: After management with sirolimus, symptoms resolved. MESSAGE: Sirolimus may be a valuable option for reducing bleeding complications and cosmetic sequelae for the patients with this syndrome.
January 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28139107/-venous-aneurysms-associated-with-lymphatic-malformations
#19
V Núñez Cerezo, M I Romo Muñoz, J Jiménez Gómez, P Triana Junco, A Sánchez Galán, G Chocarro Amatriain, J C López Gutiérrez
OBJECTIVES: To analyze and describe the association between the development of venous aneurysms of the mayor vessels in patients with lymphatic malformations. MATERIAL AND METHODS: Retrospective review of patients diagnosed with both VA and LM from 1993 to 2014 and a descriptive analysis of clinical course was performed. RESULTS: We found 6 patients, 50% females, who had LM and VA confirmed with imaging techniques. All were diagnosed between 20 weeks- 12 years of age...
April 10, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/28131871/cavernous-venous-malformation-cavernous-hemangioma-of-the-orbit-current-concepts-and-a-review-of-the-literature
#20
REVIEW
Luigi Calandriello, Gabriela Grimaldi, Gianluigi Petrone, Mario Rigante, Sergio Petroni, Monica Riso, Gustavo Savino
The cavernous venous malformation of the orbit, previously called cavernous hemangioma, is the most common primary orbital lesion of adults. Cavernous venous malformation occurs more often in women and typically presents in the fourth and fifth decades of life. It is a benign vascular malformation characterized by a well-defined capsule and numerous large vascular channels. The most common sign of cavernous venous malformation is progressive axial proptosis from the preferential involvement of the intraconal orbital space...
January 26, 2017: Survey of Ophthalmology
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