Search Results
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Iacopino D G - - 2003
BACKGROUND: Intraoperative microvascular Doppler may be valuable in assisting in the surgical obliteration of dural arteriovenous fistula of the spinal cord. It enables identification, through flow spectrum analysis, of the anatomic components and haemodynamic features of this type of vascular malformation. METHODS: In two cases, intraoperative microvascular Doppler was used ...
Warakaulle D R - - 2003
Surgery is currently the standard treatment for spinal dural arteriovenous fistulae (DAVF). Endovascular embolisation of these lesions using N-butyl cyanoacrylate (NBCA) has a high success rate. Onyx is a new liquid embolic agent whose viscosity makes it suitable for treatment of spinal DAVF where penetration into the proximal radicular vein ...
Hoya Katsumi - - 2003
We have characterised the blood vessels found in normal cerebral vasculature and in arteriovenous malformations (AVMs), based on the expression of smooth muscle cell (SMC)-specific proteins. The marker proteins used were smooth muscle alpha-actin and four myosin heavy chain isoforms (SM1, SM2, SMemb and NMHC-A). Specimens of AVM obtained during ...
Benes L - - 2003
OBJECTIVE: This investigation was performed to evaluate the specific procedural issues and indications of a surgically assisted Doppler-guided endovascular transfalcine venous approach for the treatment of vein of Galen aneurysmal malformations (VGAM) in critically ill neonates. PATIENTS AND METHODS: Two neonates out of a clinical series of 15 children (8 ...
Bhat N A - - 2003
A 7-month-old child presented with imperforate anus, penoscrotal hypospadias and transposition, and a midline mucosa-lined perineal mass. At surgery the mass was found to be supplied by the median sacral artery. It was excised and the anorectal malformation was repaired by posterior sagittal anorectoplasty. Histologically the mass revealed well-differentiated colonic ...
Mori Kenichi - - 2003
We present a 65-year-old woman who was found to have a spontaneous rupture of an aneurysmal intrarenal arteriovenous fistula. To our knowledge, the present case is only the 3rd reported in the literature. The preferred method of treatment of ruptures of arteriovenous fistulae is embolization. However, the process of choosing ...
Cheng Shih-Lung - - 2003
An arteriovenous malformation (AVM) is an anomaly of capillary development that results in a direct connection between branches of an artery and veins, with no intervening capillary network. A definite diagnosis of AVM is usually made with angiography. We report the case of a posterior mediastinal AVM found on routine ...
Inoue Hiroshi K - - 2002
OBJECT: The purpose of this study was to analyze the risk of hemorrhage and the obliteration rate after treatment of patients with arteriovenous malformations (AVMs). METHODS: Between 1991 and 1995, 115 patients were treated using gamma knife radiosurgery (GKS). Surgical planning was based on angiograms and three-dimensional images. The angiographic ...
Pascual-Castroviejo Ignacio - - 2002
Congenital vascular malformations are an important group of vascular anomalies that occur very early in the pregnancy. Most of these malformations occur between the third and the seventh weeks of the embryonic development. Malformations can affect the arteries, veins, capillaries, and venous sinuses, involving an isolated vessel or a part ...
Hayakawa Kunihiro - - 2002
We describe a new vascular access grafting technique featuring end-to-end anastomosis to a deep vein in the forearm, designed to create a functional arteriovenous fistula in the forearm of patients whose subcutaneous veins are not usable for this purpose because of occlusion or attenuation. This new technique offers a valuable ...
Romano Antonino - - 2002
A patient with maculopapular reactions to iopamidol needed to undergo angiography for a cerebral arteriovenous malformation. In vivo and in vitro tests were performed with ionic and nonionic contrast media, including iopamidol and iobitridol. All results were positive, demonstrating delayed hypersensitivity. The patient received 6-alpha-methylprednisolone and cyclosporine 1 week before ...
Iwashita Yukio - - 2002
Arteriovenous malformation of the pancreas is a rare condition that may cause upper gastrointestinal bleeding. A 58-year-old man with an arteriovenous malformation of the pancreas is described. The patient had recurrent episodes of melena. The diagnosis was confirmed by angiographic study and color Doppler ultrasonography. Therapeutic embolization of the arteriovenous ...
Koppen S - - 2002
A 3 week old infant presented with persistent hypoxaemia and was diagnosed with pulmonary arteriovenous malformations. Her family history was positive for hereditary haemorrhagic telangiectasia. She was treated successfully with coil embolotherapy at the age of 4 months. Transcatheter embolisation may be considered the primary treatment for pulmonary arteriovenous malformations ...
Sumner Charlotte J - - 2002
OBJECTIVES: To report the successful and uncomplicated use of systemic thrombolysis for massive pulmonary embolism in a patient with a known cerebral arteriovenous malformation and to suggest that the presence of an unruptured arteriovenous malformation or aneurysm should not be considered an absolute contraindication to systemic thrombolysis. DESIGN: Case report. ...
Kurozumi Kazuhiko - - 2002
The authors report a rare case in which a large cerebral arteriovenous malformation (AVM) located in the left parietooccipital region presented with venous ischemia in the contralateral hemisphere. A 74-year-old man was admitted to the hospital because he was experiencing a loss of appetite, disorientation, and left hemiparesis. Computerized tomography ...
Hung Po-Cheng - - 2002
Childhood intracranial varix is rare and has been associated mostly with vein of Galen fistula or arteriovenous malformation. We present one patient with intracranial arteriovenous fistula with concomitant giant varix in a child. We treated the patient with endovascular embolization and obtained complete closure of fistula without morbility and mortality. ...
Denlinger Chadrick E - - 2002
Pulmonary arteriovenous malformations (AVMs) with systemic arterial collateralization related to a prior tuberculosis empyema are extremely rare. We report the case of a 15-year-old boy who developed a pulmonary AVM with massive systemic arterial collateralization 5 years after being treated for a Mycobacterium tuberculosis empyema necessitans. The AVM was successfully ...
Söderman Michael - - 2002
BACKGROUND AND PURPOSE: Subpial cerebral arteriovenous malformations (AVMs) can develop a transdural arterial blood supply. The relationships between AVM volume, patient age, embolization and prior hemorrhage, and the frequency of transdural blood supply were investigated. METHODS: During 1997-1999, 105 consecutive patients with 107 AVMs adjacent to the dura mater were ...
Kretschmar Oliver - - 2002
We report the case of a 42-year-old woman with Rendu-Osler-Weber syndrome (hereditary hemorrhagic telangiectasia) and a huge pulmonary arteriovenous fistula that involved the entire right middle lobe. She had a history of dyspnea and intermittent atrial flutter for 6 months. A chest radiograph showed a discrete shadowing of the middle ...
Malhotra Sunil P - - 2002
BACKGROUND: Cavopulmonary anastomosis is used for palliation of cyanotic heart disease. Clinically significant pulmonary arteriovenous malformations occur in up to 25% of patients after surgical intervention. Cavopulmonary anastomosis creates several modifications to pulmonary physiology that may contribute to the development of pulmonary arteriovenous malformations, including reduced pulmonary blood flow and ...
Ventura M - - 2002
We report a case of iliac arteriovenous fistula (AVF) following disk surgery. A 51-year-old woman underwent hemilaminectomy for a slipped disk. Two weeks after surgery the patient experienced dyspnea and oedema of the lower limbs. Presence of a systolic murmur on the cardiac floor and on the abdomen was detected ...
Chessa Massimo - - 2002
Development of improved devices for interventional closure of atrial septal defect and patent foramen ovale increased the number of adult patients who are being referred for transcatheter closure. We report two cases that were scheduled for patent foramen ovale closure because of a right-to-left atrial shunt detected at contrast transesophageal ...
Gupta P - - 2002
OBJECTIVE: This study assessed the effect and safety of percutaneous transcatheter coil embolization of pulmonary arteriovenous malformations. MATERIALS AND METHODS: In 58 (88%) of 66 patients, all malformations with feeding vessels greater than or equal to 3 mm in diameter were embolized with steel coils. Arterial oxygen saturation at rest ...
Sakamoto Makoto - - 2002
BACKGROUND: Spinal cord arteriovenous malformation (AVM) associated with spinal aneurysm is not particularly rare, but cases presenting with hematomyelia are relatively rare compared to those with subarachnoid hemorrhage (SAH). We report a rare case of successfully treated spinal AVM associated with ruptured aneurysm presenting with hematomyelia. CASE DESCRIPTION: A 52-year-old ...
Puvaneswary M - - 2002
Pulmonary arteriovenous malformations (AVMs) are rare vascular malformations of the lung. Although most patients are asymptomatic, AVMs can bleed and result in haemoptysis and haemothorax. We describes a case of pulmonary AVMs in a patient with Osler-Weber-Rendu syndrome with 3-D contrast-enhanced MR angiography. Magnetic resonance angiography provided accurately and non-invasively ...
Bendok Bernard R - - 2002
OBJECTIVE AND IMPORTANCE: The presence of a residual arteriovenous malformation (AVM) on postoperative angiograms is typically an indication for prompt return to the operating room to complete resection, because of the risk of early hemorrhage. This approach, however, may involve risks of neurological deficits when the residual AVM is in ...
Heling K-S - - 2002
Vessel malformations, which are very rare, can be diagnosed prenatally using color Doppler sonography. We present a case of a fetus which, at first prenatal presentation at 27 weeks, was diagnosed as having an intrapulmonary arteriovenous malformation. On the basis of the gray-scale sonographic findings of cardiomegaly and dilatation of ...
Pollak Yale - - 2002
Pulmonary arteriovenous malformations are rare vascular malformations that usually present with dyspnea and cyanosis in young adults. With the exception of infants and newborns, pulmonary arteriovenous malformations rarely cause congestive heart failure. The authors describe an unusual case in which an elderly female presented with severe dyspnea, hypoxemia, and high-output ...
Anbarasu Arangasamy - - 2002
Carotid sonography is a well-established technique in the evaluation of patients with neurologic symptoms. We describe the case of a woman in whom duplex Doppler sonography of the extracranial carotid circulation showed high-velocity diastolic flow and a low resistance index without turbulence or morphologic abnormality of the artery. A suspected ...
Kawaguchi Tsutomu - - 2002
A 44-year-old man presented with traumatic injuries of the bilateral middle meningeal arteries after a traffic accident. Neurological examination found left visual impairment due to left optic nerve injury. Computed tomography demonstrated a small amount of left epidural hemorrhage and bilateral skull fractures. Left external carotid angiography revealed a pseudoaneurysm ...
Erdöl C - - 2002
We present a 65-year-old man who had a significant arteriovenous fistula between the right arteria profunda femoralis and vena profunda femoralis. He had evidence of chronic venous insufficiency and chronic leg ulcers on his right leg, and he had clinical findings of congestive heart failure. An arteriovenous fistula was responsible ...
Schaat Timothy J - - 2002
STUDY DESIGN: A case of spinal dural arteriovenous fistula arising from a branch of the internal iliac artery is reported. OBJECTIVE: To report a rare case of spinal dural arteriovenous fistula supplied by a lateral sacral artery and treated with endovascular therapy. SUMMARY OF BACKGROUND DATA: Spinal dural arteriovenous fistulas ...
Allaria P M - - 2002
One of the complications of arteriovenous fistulas in chronic hemodialyzed patients is the onset of an aneurysm which can be at risk of rupture. Traditional surgical repair is not always feasible and may not be successful in these cases, leading therefore to the loss of a functioning vascular access and ...
Song Joon K - - 2002
The authors present the case of a 69-year-old man who suffered from bilateral cortical venous hypertension due to a brain pial arteriovenous malformation (AVM) with a high-flow fistula. The AVM became complicated by the development of a high-grade stenosis of the posterior superior sagittal sinus (SSS). A comparison of cerebral ...
Khurshid I - - 2002
Pulmonary arteriovenous malformations (PAVM) are rare pulmonary vascular anomalies. Although most patients are asymptomatic, PAVMs can cause dyspnoea from right-to-left shunt. Because of paradoxical emboli, various central nervous system complications have been described including stroke and brain abscess. There is a strong association between PAVM and hereditary haemorrhagic telangiectasia. Chest ...
Schreiber Stephan Joachim - - 2002
Echo-contrast "bolus tracking" by ultrasound (US) is an exciting new tool to study cerebral haemodynamics. In the present study, a global cerebral circulation time (CCT) was measured by extracranial Doppler as the time difference of contrast bolus arrival between the internal carotid artery and internal jugular vein. A total of ...
Iizuka Y Y Department of Radiology, Juntendo University School of Medicine; Tokyo, Japan - - - 2002
We report an infantile huge perimedullary spinal arteriovenous fistula (SAVF) associated with Hereditary-Hemorrhagic-Telangiectasia (HHT), which was treated by glue embolization in one session. Three-dimensional Multidetector Computed Tomography Angiography (3D-MCTA) was useful in pre- and post-endovascular intervention.
Hsu S W SW Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Kaohsiung, - - 2002
A patient with a spinal intradural arteriovenous malformation (AVM) at the conus medullaris concomitant with a sacral dural arteriovenous fistula (AVF) of the filum terminale is reported. A 44-year-old-male presentied with bilateral leg weakness and urinary incontinence for several months. Spinal angiography demonstrated two lesions: one was spinal intradural AVM ...
Campos C C Section of Interventional Neuroradiology of Med Imagem, Beneficência Portuguesa Hospital; São Paulo, - - 2002
A high flow pial arteriovenous fistula in a twenty-years-old girl is described. The arteriovenous communication corresponds to a single hole fistula on the right rolandic area, with a giant venous ectasia. The patient presented seizures and left hemiparesis as symptoms. The fistula was embolized with glue obtaining total occlusion of ...
McMahon Colin J - - 2002
There have been several modifications of the Fontan procedure, which has been used for palliation of the functionally univentricular circulation since its conception in the early 1970s. The development of intrahepatic veno-venous fistulas, pulmonary arteriovenous fistulas, and communications from the hepatic vein to the pulmonary venous atrium, are some of ...
Villavicencio J Leonel - - 2002
Congenital vascular malformations may involve arterial, venous, and lymphatic structures, can present in a variety of forms, and present many diagnostic and therapeutic challenges. Two-thirds of all congenital vascular malformations are predominantly venous, and their management will be emphasized in this article, because of the focus of this issue. The ...
Bhama Jay K - - 2002
Expanded polytetrafluoroethylene (ePTFE) is the most commonly employed vascular prosthetic for constructing arteriovenous fistulas for hemodialysis. Venous aneurysm is a rare complication following construction of such fistulas. We describe the case of a saccular aneurysm of the cephalic vein arising after construction of a PTFE arteriovenous graft for hemodialysis. The ...
Bennhagen R G - - 2002
Pulmonary arteriovenous malformation (PAVM), as a part of Osler-Weber-Rendu Syndrome, in the neonate, is a rare hereditary vascular malformation. Large intrapulmonary right-to-left shunting, causing hypoxaemia and cyanosis, can be a life-threatening condition. Repeated transcatheter coil embolization procedures proved to be a favorable strategy to improve systemic arterial oxygen saturation, with ...
Vorstman E B A - - 2002
This is a report of a 9-year-old female with a clinical presentation of benign intracranial hypertension (BIH) who was found to have an unruptured pial arteriovenous malformation (AVM) with a significant fistula. The AVM was completely embolized using a recently developed liquid embolic system, Onyx, after which gradual clinical improvement ...
He Cijang - - 2002
Decreased use of native arteriovenous fistulas and an increased reliance on synthetic grafts as permanent dialysis access have accompanied the growth of the dialysis population in the United States, but not at our institution. Possible reasons for this difference were studied in a cross-sectional analysis in August of 2000. There ...
Hoffer Eric K - - 2002
PURPOSE: To evaluate the prevalence of intermittent opacification, a finding previously described as diagnostic of active bleeding that allows identification of an injured vessel at initial aortography or first-order selective angiography. MATERIALS AND METHODS: Retrospective review was performed of 35 consecutive cases that were positive for true or false aneurysm, ...
Dixon Bradley S - - 2002
Achieving Dialysis Outcomes Quality Initiative guidelines for native arteriovenous fistulae using the radiocephalic forearm fistula (lower-arm fistula [LAF]) is difficult. This study reports results using the upper-arm native arteriovenous fistula (UAF). From a prospective access database (1992 to 1998), this study was based on 204 patients (322 accesses). Average patient ...
Smith Jodi L - - 2002
Arteriovenous malformations (AVMs) of the brain are complex, congenital, high-flow vascular lesions in which there is a direct fistulous connection between arteries and veins without an intervening capillary bed. Patients commonly present with hemorrhage or seizures. Treatment must take into account the natural history of these lesions and the risks ...
Tanaka M M Institute of Neuroradiology, University Hospital of Zurich, Zurich; - - 2001
Three cases of occult micro-arteriovenous malformations not identified by cerebral angiography or other imaging modalities were detected by superselective angiography. The first case had a small intracerebral hemorrhage in the superior colliculus, the second had a perimesencephalic subarachnoid hemorrhage, and the third presented with intracerebral hemorrhage combined with massive intraventricular ...
Komiyama M M Department of Neurosurgery, Osaka City General Hospital; Osaka, Japan - - - 2001
Eleven patients with so-called "vein of Galen aneurysms" are reported, six of whom presented with vein of Galen aneurysmal malformations (four with choroidal type and two with mural type malformations). The remaining five patients presented with vein of Galen aneurysmal dilatations secondarily due to an arteriovenous malformation in one patient, ...
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