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https://www.readbyqxmd.com/read/29595639/an-overlooked-cause-in-a-patient-with-recurrent-ischemic-stroke-a-case-report
#1
Xunzhe Yang, Mingsheng Liu, Yicheng Zhu, Xiaobo Zhang, Shan Gao, Jun Ni
RATIONALE: The majority of ischemic strokes are due to cardioembolism, large vessel atherothromboembolism, small vessel occlusive disease, or other unusual mechanisms. In most clinical settings, many strokes without a well-defined etiology requires a thorough diagnostic evaluation, otherwise the underlying cause might be easily overlooked. Here we report on the rare cause of a patient with recurrent stroke. PATIENT CONCERNS: A 50-year-old female patient had a 4-year history of recurrent acute onset of neurological deficits...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29532185/polypoid-pulmonary-arteriovenous-malformation-causing-hemothorax-treated-with-thoracoscopic-wedge-resection
#2
Haruhiko Shiiya, Yasuhiro Suzuki, Shigeo Yamazaki, Kichizo Kaga
BACKGROUND: Pulmonary arteriovenous malformations (PAVMs) can be associated with life-threatening complications such as paradoxical embolization, cerebral abscess, and hemothorax. Therefore, all adults with PAVMs should be offered treatment. Percutaneous transcatheter embolization is the first-line treatment, but 5-25% of cases require further treatment due to persistence after embolization. Recently, the role of minimally invasive thoracic surgery as a definitive treatment has been evaluated...
March 12, 2018: Surgical Case Reports
https://www.readbyqxmd.com/read/29497946/reproducibility-of-right-to-left-shunt-quantification-using-transthoracic-contrast-echocardiography-in-hereditary-haemorrhagic-telangiectasia
#3
V M M Vorselaars, S Velthuis, M P Huitema, A E Hosman, C J J Westermann, R J Snijder, J J Mager, M C Post
AIM: Transthoracic contrast echocardiography (TTCE) is recommended for screening of pulmonary arteriovenous malformations (PAVMs) in hereditary haemorrhagic telangiectasia. Shunt quantification is used to find treatable PAVMs. So far, there has been no study investigating the reproducibility of this diagnostic test. Therefore, this study aimed to describe inter-observer and inter-injection variability of TTCE. METHODS: We conducted a prospective single centre study...
March 1, 2018: Netherlands Heart Journal
https://www.readbyqxmd.com/read/29440838/arterial-duct-and-pulmonary-arteriovenous-malformations-a-shunt-masking-a-shunt
#4
Mario Giordano, Giuseppe Santoro, Maria Teresa Palladino, Maria Giovanna Russo
A 5-month-old infant, referred to our institution for percutaneous arterial duct (AD) embolization, showed multiple huge pulmonary arteriovenous malformations (PAVMs) associated with a small AD and several tiny systemic-to-pulmonary collaterals. This anatomic arrangement was a possible cause of lack of cyanosis and disproportionately higher hemodynamic relevance of the ductal shunt. The PAVMs became pathophysiologically evident immediately after the closure of AD and systemic to pulmonary artery collaterals and presented clinically with a life-threatening cyanosis...
January 2018: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/29429141/utility-of-second-generation-single-energy-metal-artifact-reduction-in-helical-lung-computed-tomography-for-patients-with-pulmonary-arteriovenous-malformation-after-coil-embolization
#5
Yudai Asano, Akihiro Tada, Takayoshi Shinya, Yoshihisa Masaoka, Toshihiro Iguchi, Shuhei Sato, Susumu Kanazawa
PURPOSE: The quality of images acquired using single-energy metal artifact reduction (SEMAR) on helical lung computed tomography (CT) in patients with pulmonary arteriovenous malformation (PAVM) after coil embolization was retrospectively evaluated. MATERIALS AND METHODS: CT images were reconstructed with and without SEMAR. Twenty-seven lesions [20 patients (2 males, 18 females), mean age 61.2 ± 11.0 years; number of embolization coils, 9.8 ± 5.0] on contrast-enhanced CT and 18 lesions of non-enhanced lung CT concurrently performed were evaluated...
February 10, 2018: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/29344712/usefulness-of-hydrogel-coated-coils-in-embolization-of-pulmonary-arteriovenous-malformations
#6
Masashi Shimohira, Tatsuya Kawai, Takuya Hashizume, Masahiro Muto, Masanori Kitase, Yuta Shibamoto
PURPOSE: To evaluate the usefulness of hydrogel-coated coils for preventing recanalization after coil embolization of pulmonary arteriovenous malformations (PAVMs). MATERIALS AND METHODS: Thirty-seven consecutive patients with 57 untreated PAVMs underwent coil embolization with hydrogel-coated coils between January 2013 and Jun 2017. The mean age was 49 years (range 9-83 years), and there were seven male patients and 30 female patients. The median size of the feeding artery was 3...
January 17, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29277952/a-tale-of-two-cases-of-pulmonary-arteriovenous-malformation-how-they-fared-after-cardiac-transplantation
#7
Bethany L Wisotzkey, Dari L Magyar, Thomas K Jones, Robert J Boucek, Lester C Permut, Mariska S Kemna, Yuk M Law
BACKGROUND: In single ventricle patients, aortopulmonary collaterals (APCs) and pulmonary arteriovenous malformations (PAVMs) following superior cavopulmonary shunt (CPS) can complicate orthotopic heart transplant (OHT) by cyanosis and hemoptysis. Although PAVMs can regress with the restoration of hepatic venous flow to the pulmonary circulation, the effects of hypoxemia on the "unconditioned" allograft are not known. CASES: Two patients with significant PAVMs after CPS were cyanotic following OHT...
February 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29274888/echocardiography-grading-for-pulmonary-arteriovenous-malformation-screening-in-children-with-hereditary-hemorrhagic-telangiectasia
#8
Nigel Fernandopulle, Luc Mertens, Michelle Klingel, David Manson, Felix Ratjen
Transthoracic contrast echocardiography (TTCE) has high sensitivity but low specificity in screening for pulmonary arteriovenous malformations (pAVMs) in children with hereditary hemorrhagic telangiectasia (HHT). Here we describe characteristics of TTCE that might be used to reduce the need for confirmatory computed tomography scans in children with HHT.
April 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29245306/unusual-synchronous-liver-and-brain-abscesses-infected-by-rare-aerococcus-viridians-in-a-patient-with-pulmonary-arteriovenous-malformations-on-fdg-pet-ct-a-case-report-and-literature-review
#9
REVIEW
Donghe Chen, Mengjie Dong, Kui Zhao, Fang Sun, Huatao Wang, Zhengfeng Liu
RATIONALE: Pulmonary arteriovenous malformations (PAVMs) complicated with multiple organ abscesses is an uncommon manifestation. Because of the low incidence of the disease, F-18 fluorodeoxyglucose positron emission tomography with computed tomography (F-FDG PET/CT) imaging studies for PAVMs complicated with multiple organ abscesses are scarce. PATIENT CONCERNS: We report a case of a 54-year-old man presenting with PAVMs complicated with synchronous multiple organ abscesses founded by F-FDG PET/CT...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29142484/contemporary-management-of-pulmonary-arteriovenous-malformations
#10
REVIEW
Nicholas Rauh, John Gurley, Sibu Saha
Pulmonary arteriovenous malformations (PAVMs) are atypical vascular structures involving a direct connection between the pulmonary arterial and venous circulations. While PAVMs are a relatively uncommon disorder, unmanaged cases are at risk for the development of serious complications including embolization and infection. Since their first description in 1897, PAVMs have been identified and treated in a variety of ways. Advancements in diagnostic methods and operative techniques have allowed for more effective treatment of the disease...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29141890/british-thoracic-society-clinical-statement-on-pulmonary-arteriovenous-malformations
#11
Claire L Shovlin, Robin Condliffe, James W Donaldson, David G Kiely, Stephen J Wort
Pulmonary arteriovenous malformations (PAVMs) are structurally abnormal vascular communications that provide a continuous right-to-left shunt between pulmonary arteries and veins. Their importance stems from the risks they pose (>1 in 4 patients will have a paradoxical embolic stroke, abscess or myocardial infarction while life-threatening haemorrhage affects 1 in 100 women in pregnancy), opportunities for risk prevention, surprisingly high prevalence and under-appreciation, thus representing a challenging condition for practising healthcare professionals...
December 2017: Thorax
https://www.readbyqxmd.com/read/29103837/persistent-pulmonary-arteriovenous-malformations-percutaneous-embolotherapy
#12
Ahmed Kamel Abdel Aal, Joseph Eason, Sherif Moawad, Khalid Mahmoud, Basant Farouk Hamed, Moustafa Omar Massoud, Nathan Ertel, Andrew Gunn, Rachel Oser, Souheil Saddekni
Pulmonary arteriovenous malformations (PAVM) are an uncommon entity that interventional radiologists may face in their clinical practice. Many of these lesions are treated successfully using endovascular techniques with satisfactory long-term results. However, some PAVMs respond poorly to initial interventional techniques. This article reviews the signs and symptoms of persistent PAVMs, illustrates different imaging modalities used to diagnose these lesions, and outlines mechanisms by which these lesions may persist...
September 21, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/29071074/long-term-outcomes-of-patients-with-pulmonary-arteriovenous-malformations-considered-for-lung-transplantation-compared-with-similarly-hypoxaemic-cohorts
#13
Claire L Shovlin, Elisabetta Buscarini, J Michael B Hughes, David J Allison, James E Jackson
INTRODUCTION: Pulmonary arteriovenous malformations (PAVMs) may not be amenable to treatment by embolisation or surgical resection, and many patients are left with significant hypoxaemia. Lung transplantation has been undertaken. There is no guidance on selection criteria. METHODS: To guide transplantation listing assessments, the outcomes of the six patients who had been considered for transplantation were compared with a similarly hypoxaemic patient group recruited prospectively between 2005 and 2016 at the same UK institution...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/29048420/characterization-of-pulmonary-arteriovenous-malformations-in-acvrl1-versus-eng-mutation-carriers-in-hereditary-hemorrhagic-telangiectasia
#14
Weiyi Mu, Zachary A Cordner, Kevin Yuqi Wang, Kate Reed, Gina Robinson, Sally Mitchell, Doris Lin
PurposePulmonary arteriovenous malformations (pAVMs) are major contributors to morbidity and mortality in hereditary hemorrhagic telangiectasia (HHT). Mutations in ENG and ACVRL1 underlie the vast majority of clinically diagnosed cases. The aims of this study were to characterize and compare the clinical and morphologic features of pAVMs between these two genotype groups.MethodsSixty-six patients with HHT and affected family members were included. Genotype, phenotypic data, and imaging were obtained from medical records...
October 19, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29018941/pulmonary-arteriovenous-malformations-in-hereditary-haemorrhagic-telangiectasia-correlations-between-computed-tomography-findings-and-cerebral-complications
#15
Johan Etievant, Salim Si-Mohamed, Nicolas Vinurel, Sophie Dupuis-Girod, Evelyne Decullier, Delphine Gamondes, Chahera Khouatra, Vincent Cottin, Didier Revel
OBJECTIVES: Computed tomography (CT) is the modality of choice to characterise pulmonary arteriovenous malformations (PAVMs) in patients with hereditary haemorrhagic telangiectasia (HHT). Our objective was to determine if CT findings were associated with frequency of brain abscess and ischaemic stroke. METHODS: This retrospective study included patients with HHT-related PAVMs. CT results, i.e. PAVM presentation (unique, multiple, disseminated or diffuse), the number of PAVMs and the largest feeding artery size, were correlated to prevalence of ischaemic stroke and brain abscess...
October 10, 2017: European Radiology
https://www.readbyqxmd.com/read/29018013/stroke-resulting-from-an-isolated-pulmonary-arteriovenous-malformation
#16
Jakob Saidman, Hossam Abdou, Sridhar Sampath Kumar
Isolated pulmonary arteriovenous malformations (PAVM) are rare, but can be responsible for paradoxical embolic events. It is important to recognise these situations early and intervene quickly to attain the best outcome. We describe the case of a 45-year-old woman with a long-standing history of migraines with aura who presented to the emergency department with left-sided weakness and slurred speech. Work-up was unclear and she was diagnosed with cryptogenic stroke. Follow-up transoesophageal echocardiogram was suggestive of an atrial septal defect, though no clear defect was evident...
October 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28990732/first-use-of-micro-vascular-plugs-in-australia-endovascular-treatment-of-pulmonary-arteriovenous-malformation
#17
Liat Barrett, Nicholas I Brown, Varghese Pynadath Joseph
This report describes the first Australian experience with the Micro Vascular Plug System (MVP), as a permanent embolic device for the treatment of pulmonary arteriovenous malformations (PAVMs). MVPs deployed in small vessels between 2 mm and 5 mm are demonstrated to be feasible, safe and effective treatment for PAVMs.
October 9, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28987686/can-the-pine-needle-sign-on-computed-tomography-be-used-to-differentiate-pulmonary-arteriovenous-malformation-from-its-mimics-analysis-based-on-dynamic-contrast-enhanced-chest-computed-tomography-in-adults
#18
Koji Tokunaga, Takeshi Kubo, Toshihide Yamaoka, Hiroyoshi Isoda, Kaori Togashi
OBJECTIVES/PURPOSE: To determine the diagnostic value of morphological features on computed tomography (CT) in the differentiation of pulmonary arteriovenous malformation (pAVM) and its mimics. MATERIALS AND METHODS: We retrospectively examined 59 consecutive patients (109 lesions) with initially suspected or occult pAVM who underwent contrast-enhanced chest CT from January 2006 to June 2016. All lesions were divided into two groups based on their diagnosis: AVM (n=93) and non-AVM (n=16)...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28944082/ultra-short-echo-time-magnetic-resonance-imaging-for-detection-of-pulmonary-arteriovenous-malformation-recanalization-after-coil-embolization-a-case-report-and-a-phantom-study
#19
Kohei Hamamoto, Emiko Chiba, Katsuhiko Matsuura, Tomohisa Okochi, Keisuke Tanno, Osamu Tanaka
A pulmonary arteriovenous malformation (PAVM) is a direct connection between the pulmonary arteries and veins for which metallic coil transcatheter embolization is the standard of care. Detecting recanalization after PAVM treatment is crucial, but direct visualization with computed tomography or magnetic resonance imaging (MRI) is generally difficult. Here, we report a case of a recanalized PAVM that was directly detected with ultra-short echo time MRI. The detection of these signals in the coils was confirmed in a phantom study...
September 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28936439/a-case-of-pulmonary-arteriovenous-malformation-role-of-interventional-radiology-in-diagnosis-and-treatment
#20
Pranav Sharma, Puneet Kochar, Salil Sharma, Nishant Gupta, Shuo Li, Kusum Hooda, Yogesh Kumar
Pulmonary arterio-venous malformations (PAVMs) are abnormal pulmonary arteries and pulmonary veins communicating directly without interposition of a capillary bed and about 80-90% of patients with PAVMs eventually may present with hereditary hemorrhagic telangiectasia (HHT), remaining ones are sporadic cases. On the other hand, about 15-35% of HHT patients may present with PAVMs. The PAVMs have a tendency to grow and increase in size over time and various factors like puberty, pregnancy and pulmonary arterial hypertension (PAH) affect growth...
September 2017: Annals of Translational Medicine
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