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Pial fistula

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https://www.readbyqxmd.com/read/29082570/galenic-pial-arteriovenous-fistulas-angioarchitecture-clinical-presentation-and-therapeutic-considerations
#1
REVIEW
Michael George Zaki Ghali
Vein of Galen aneurysmal malformations (VGAMs) are complex vascular lesions. Their etiopathogenesis is extensively debated and remains poorly understood. Strictly speaking, true VGAMs are Galenic pial arteriovenous fistulas. They are believed to arise in utero and are contended to drain either into the true vein of Galen or the median prosencephalic vein of Markowski. Several classification systems have been proposed and are widely used. With the advent of endovascular therapy, precise understanding of the angioarchitecture is critical for management and therapeutic decision making...
October 30, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28970244/pial-artery-supply-as-an-anatomic-risk-factor-for-ischemic-stroke-in-the-treatment-of-intracranial-dural-arteriovenous-fistulas
#2
S W Hetts, A Yen, D L Cooke, J Nelson, P Jolivalt, J Banaga, M R Amans, C F Dowd, R T Higashida, M T Lawton, H Kim, V V Halbach
BACKGROUND AND PURPOSE: Although intracranial dural arteriovenous fistulas are principally supplied by dural branches of the external carotid, internal carotid, and vertebral arteries, they can also be fed by pial arteries that supply the brain. We sought to determine the frequency of neurologic deficits following treatment of intracranial dural arteriovenous fistulas with and without pial artery supply. MATERIALS AND METHODS: One hundred twenty-two consecutive patients who underwent treatment for intracranial dural arteriovenous fistulas at our hospital from 2008 to 2015 were retrospectively reviewed...
September 28, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28896002/-intracerebral-pial-arteriovenous-fistula-with-giant-venous-varix
#3
J Vilalta, S Nunez-Videgaray, D Gandara, A Rodriguez-Hernandez, F Arikan
No abstract text is available yet for this article.
September 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28862546/angioarchitecture-of-arteriovenous-fistulas-at-the-craniocervical-junction-a-multicenter-cohort-study-of-54-patients
#4
Masafumi Hiramatsu, Kenji Sugiu, Tomoya Ishiguro, Hiro Kiyosue, Kenichi Sato, Keisuke Takai, Yasunari Niimi, Yuji Matsumaru
OBJECTIVE The aim of this retrospective multicenter cohort study was to assess the details of the angioarchitecture of arteriovenous fistulas (AVFs) at the craniocervical junction (CCJ) and to determine the associations between the angiographic characteristics and the clinical presentations and outcomes. METHODS The authors analyzed angiographic and clinical data for patients with CCJ AVFs from 20 participating centers that are members of the Japanese Society for Neuroendovascular Therapy (JSNET). Angiographic findings (feeding artery, location of AV shunt, draining vein) and patient data (age, sex, presentation, treatment modality, outcome) were tabulated and stratified based on the angiographic types of the lesions, as diagnosed by a member of the CCJ AVF study group, which consisted of a panel of 6 neurointerventionalists and 1 spine neurosurgeon...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28780402/correlation-of-aggressive-intracranial-lesions-and-venous-reflux-patterns-in-dural-arteriovenous-fistulas
#5
Lei Huang, Liang Ge, Gang Lu, Daoying Geng, Xiaolong Zhang, Wenjie Cao
BACKGROUND: The association between venous reflux patterns with aggressive intracranial lesions (AILs), including intracranial edema (IE), intraparenphymal hemorrhage (IPH), and subarachnoid hemorrhage (SAH), has not been well established in cranial dural arteriovenous fistulas (DAVFs). We propose an updated classification system based on venous drainage. METHODS: We retrospectively assessed the catheter angiography findings of venous drainage patterns. Cranial DAVFs with no reflux flow and those with reflux flow drainage into the sinus only, the bridge vein only, the bridge vein and pial vein, and the sinus, bridge vein, and pial vein were designated as types 1, 2, 3, 4, and 5, respectively...
November 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28728535/endovascular-occlusion-of-pial-arteriovenous-macrofistulae-using-pcanvas1-and-adenosine-induced-asystole-to-control-nbca-injection
#6
P Lylyk, J Chudyk, C Bleise, C Serna Candel, M Aguilar Pérez, H Henkes
Background In large-caliber pial macrofistulae (pMF), the combination of high blood flow velocity and large efferent artery diameter makes control over the endovascular vessel occlusion difficult and may result in the inadvertent venous passage of occlusive devices or embolic agents. Case descriptions Patient 1: A 27-year-old man presented with headache and ataxia. An infratentorial pMF supplied by both superior cerebellar arteries with venous ectasia was found. The first treatment attempt using balloons and coils failed since the position of either device could not be controlled because of a distal diameter of the feeding artery of 8 mm...
December 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28676463/pial-dural-intracranial-arteriovenous-fistula-with-flow-associated-aneurysmal-rupture-case-report-with-review-of-literature-and-proposal-on-the-mechanism-of-hemorrhage-and-treatment-options
#7
REVIEW
Christopher Elia, Tanya Minasian, Mazen Noufal, Vaninder Chhabra
BACKGROUND: Vascular anomalies in the form of dural arteriovenous fistulas (DAVFs), arteriovenous malformations, and aneurysms are well described in the literature. Pial arteriovenous fistulas (PAVFs) are described to a lesser extent in the literature. When these anomalies are combined, diagnosis and treatment become complex. CASE DESCRIPTION: A 55-year-old man presented with PAVF/DAVF with a ruptured flow-related aneurysm in the distal left posterior inferior cerebellar artery, which required surgical clipping and disconnection...
September 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28559076/prenatal-diagnosis-and-multimodal-neonatal-treatment-of-a-rare-pial-arteriovenous-fistula-case-report-and-review-of-the-literature
#8
REVIEW
Alessandro Pedicelli, Marta Iacobucci, Paolo Frassanito, Emilio Lozupone, Gabriele Masselli, Concezio Di Rocco, Cesare Colosimo
BACKGROUND: Intracranial pial arteriovenous fistulas (PAVFs) are direct communications between the arterial and venous system of the brain, with the characteristic absence of a plexiform nidus, as seen in the classic cerebral arteriovenous malformations. These vascular malformations, usually occurring in the pediatric population, very rarely are diagnosed in utero, because of a lack of understanding of the condition and because they may be hard to visualize. CASE DESCRIPTION: We report a rare case of a mass-effect PAVF diagnosed with fetal magnetic resonance imaging, involving the right cerebral hemisphere, fed by a pericallosal artery and associated with a giant venous dilatation...
August 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28558378/pial-arteriovenous-fistula-and-capillary-malformation-arteriovenous-malformation-associated-with-rasa1-mutation-2-pediatric-cases-with-successful-surgical-management
#9
A Jessey Chugh, Asim Shahid, Sunil Manjila, Deepak Gulati, Nicholas C Bambakidis
We present case reports of 2 pediatric patients who were both found to have pial arteriovenous fistulas (AVFs) with subsequent genetic analysis revealing mutations in the RASA1 gene. Considering their family history of distinct cutaneous lesions, these mutations were likely inherited as opposed to de novo mutations. Patient 1 had large capillary malformations on the left side of the face and neck, associated with macrocephaly, and presented at the age of 32 months with speech delay, right-sided weakness, and focal seizures involving the right side of the body...
2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28436714/a-hemorrhagic-complication-after-onyx-embolization-of-a-tentorial-dural-arteriovenous-fistula-a-caution-about-subdural-extension-with-pial-arterial-supply
#10
Kenichi Sato, Yasushi Matsumoto, Hidenori Endo, Teiji Tominaga
We report a case of tentorial dural arteriovenous fistula (DAVF) with a severe intracranial hemorrhage occurring after Onyx embolization. A 40-year-old man presented with an asymptomatic tentorial DAVF on angiography. Transarterial embolization with Onyx was performed via the middle meningeal artery, and the cast filled the fistula itself and its proximal draining vein. Postoperative angiography confirmed complete occlusion of the DAVF. A computed tomography scan performed immediately after the procedure demonstrated an acute subdural hematoma with the temporal hemorrhage...
June 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28369985/nongalenic-pial-arteriovenous-fistula-prenatal-diagnosis
#11
Cristina Martínez-Payo, Javier Sancho Saúco, Maria Miralles, Tirso Pérez Medina
Pial arteriovenous (AV) fistulae have rarely been diagnosed in utero. They are characterized by one or more pial arteries flowing directly into a cortical vein without any shunt or interposed capillary bed. In the fetus and the newborn up to 2 years of age, the most common clinical manifestation is heart failure resulting from fistula overload. Later on, hydrocephalus, focal neurologic deficits, headaches, seizures, and cerebral hemorrhage are the most common manifestations. We present a case of nongalenic pial AV fistula diagnosed in the 25th week of pregnancy, which resulted in intrauterine fetal death due to congestive heart failure...
April 3, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28316871/cortical-versus-pial-venous-drainage-in-dural-arteriovenous-fistula
#12
Sang Hun Lee, Dae Chul Suh
No abstract text is available yet for this article.
March 2017: Neurointervention
https://www.readbyqxmd.com/read/28297690/-multiple-tentorial-dural-arteriovenous-fistulas-with-acquired-pial-arteriovenous-fistula-presented-with-unilateral-eye-symptoms-successfully-treated-by-transarterial-embolization-and-direct-surgery-a-case-report
#13
Hisato Minamide, Yutaka Hayashi, Naoyuki Uchiyama
A 58-year-old man presented with slowly progressive chemosis, exophthalmos, and blepharedema of the left eye. Digital subtraction angiography revealed multiple dural arteriovenous fistulas(dAVFs)involving the bilateral tentorium, superior sagittal sinus, and right frontal convexity. In addition, occlusion of the left cavernous sinus and left sigmoid sinus were observed, which could lead to venous hypertension and might be associated with the occurrence of multiple dAVFs. Along with the congestion of the left ophthalmic vein, increased intracranial pressure due to the left tentorial dAVF with cortical venous reflux could have caused the left eye symptoms; therefore, the tentorial lesion was treated first...
March 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28235952/rete-mirabile-associated-with-pial-arteriovenous-fistula-imaging-features-with-literature-review
#14
Prabath Kumar Mondel, Rashmi Saraf, Uday S Limaye
A rete mirabile is a vascular network of intercommunicating small arteries or arterioles that replace the definitive adult artery supplying the brain. It supplies the brain in lower mammals but is not seen in normal human embryological development. A 26-year-old man presented with worsening tinnitus that was interfering with his sleep. On CT and digital subtraction angiography he was found to have a temporal lobe pial arteriovenous fistula with bilateral carotid and vertebral rete mirabile. The patient was offered open surgical and endovascular treatment options for pial arteriovenous fistula but he refused both and opted for conservative medical management...
September 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28209646/rete-mirabile-associated-with-pial-arteriovenous-fistula-imaging-features-with-literature-review
#15
REVIEW
Prabath Kumar Mondel, Rashmi Saraf, Uday S Limaye
A rete mirabile is a vascular network of intercommunicating small arteries or arterioles that replace the definitive adult artery supplying the brain. It supplies the brain in lower mammals but is not seen in normal human embryological development. A 26-year-old man presented with worsening tinnitus that was interfering with his sleep. On CT and digital subtraction angiography he was found to have a temporal lobe pial arteriovenous fistula with bilateral carotid and vertebral rete mirabile. The patient was offered open surgical and endovascular treatment options for pial arteriovenous fistula but he refused both and opted for conservative medical management...
February 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28180030/serial-measurement-of-superior-vena-cava-flow-in-evaluation-of-the-clinical-severity-of-pial-arteriovenous-fistula-in-an-infant
#16
Mako Ago, Kenichi Masumoto, Atsushi Uchiyama, Yasuo Aihara, Yoshikazu Okada, Satoshi Kusuda
Background Pial arteriovenous fistula (AVF) is composed of one or more direct arterial feeding vessels with a single draining vein without nidus. A patient with the disease with high-flow AV shunting in the neonatal period not only suffers from high-output cardiac failure but also shows secondary neurological sequelae. In vein of Galen aneurysmal malformation, superior vena cava (SVC) flow measurements provide useful prognostic information. Case Presentation We measured serial SVC flow in a male infant with pial AVF...
January 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28151094/spontaneous-resolution-of-ruptured-intracranial-pial-arteriovenous-fistula-following-spinal-surgery
#17
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...
April 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28059677/hydrocephalus-in-a-patient-with-an-unruptured-pial-arteriovenous-fistula-hydrodynamic-considerations-endovascular-treatment-and-clinical-course
#18
Jesús A Morales-Gómez, Vicente V Garza-Oyervides, José A Arenas-Ruiz, Mariana Mercado-Flores, C Guillermo Elizondo-Riojas, Frederick A Boop, Ángel Martínez-Ponce de León
Intracranial pial arteriovenous fistulas, also known as nongalenic fistulas, are rare vascular malformations affecting predominantly the pediatric population. Hydrocephalus is an unusual presentation in which the exact pathophysiology is not fully understood. The aim of treatment in these cases is occlusion of the fistula prior to considering ventricular shunting. Here, the authors describe the hydrodynamic considerations of the paravascular pathway and the resolution of hydrocephalus with endovascular treatment of the fistula...
March 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27847777/onyx-embolization-of-intracranial-pial-arteriovenous-fistula
#19
Hae-Min Kim, Jae-Hoon Cho, Ki-Hong Kim
Intracranial pial arteriovenous fistulas (AVFs) are rare cerebrovascular lesions consisting of one or more arterial connections to a single venous channel without an intervening nidus. Because of the location and high flow dynamics of these lesions, neurosurgeons may have a difficulty deciding between endovascular treatment and open surgical treatment. We report on a patient who underwent endovascular treatment with liquid embolic agent. A 50-year-old man with a decreased mental state and a tonic seizure event was brought to our hospital...
September 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/27601322/endovascular-treatment-of-pediatric-intracranial-arteriovenous-shunt
#20
REVIEW
Yasunari Niimi
Intracranial arteriovenous shunts (ICAVS) in young children are characterized by frequent high-flow fistulas. In association with high-flow fistulas and the physiological condition of the developing brain and heart, each ICAVS type tends to present at a certain age with unique symptoms. Vein of Galen aneurysmal malformation (VGAM) and dural sinus malformation with arteriovenous (AV) shunt tend to present in the neonate with high output cardiac failure. In infancy, VGAM, pial arteriovenous fistula (AVF) and infantile dural AVF (DAVF) tend to present with hydrodynamic disorder such as macrocephaly, ventriculomegaly, prominent facial veins, and developmental delay...
March 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
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