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Results 651 - 700 of 1312
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Binggeli R S - - 1998
A rare case of a distal aneurysm of a rostral, duplicate anterior inferior cerebellar artery feeding an associated dural arteriovenous malformation is reported. The patient presented with severe nuchal rigidity after sexual intercourse; no neurological deficit was seen. The aneurysm causing the subarachnoid hemorrhage was wrapped but the arteriovenous malformation ...
Kuroda S - - 1998
BACKGROUND: It is well known that carotid endarterectomy and extracranial-intracranial arterial bypass sometimes cause postoperative hyperperfusion, and vasoparalysis attributable to long-standing ischemia has been suggested as the cause. It is also well known that dural arteriovenous fistula (AVF) sometimes causes cerebral ischemia attributable to venous hypertension. However, there are few ...
Tanabe S - - 1998
High speed spiral computed tomography (CT) is well known to be a good tool to visualize cerebrovascular lesions; this technique is called three-dimensional CT angiography (3D-CTA). Although 3D-CTA is widely accepted to diagnose cerebral aneurysms because it is less invasive and more useful than digital subtraction angiography, little is known ...
Ito M - - 1998
Microcatheter disruption and migration is a rare etiology of complications that is directly attributable to preoperative embolization of arteriovenous malformations (AVMs). A 16-year-old male presented with cerebellar hemorrhage. Angiography showed an AVM in the right cerebellar hemisphere fed by the posterior inferior cerebellar artery (PICA) and superior cerebellar artery (SCA). ...
Trop I - - 1998
We report a case of craniocervical dural arteriovenous fistula with perimedullary venous drainage associated with cervical myelopathy in which spinal angiography showed a normal venous phase after injection of the artery of Adamkiewicz. We conclude that because of the complex venous drainage of the spinal cord, a dural arteriovenous fistula ...
Hongo K - - 1998
Intracerebral hemorrhage and/or edema is a sequel following removal of a large nidus. We call the vascular load an 'overload phenomenon'. To prevent it by stepwise reduction of the nidus size, staged surgery is recommended for a large AVM (nidus size of more than 5 cm). With the recent advancement ...
Nagashima T - - 1998
Metameric spinal arteriovenous malformations (AVMs) refer to the lesions completely outside of the spinal cord and the surrounding dura. This paper presents an unusual metameric spinal AVM that was fed by multiple radiculomeningeal arteries and was located totally within the extradural space and the vertebral bodies. The metameric spinal AVM ...
Takebayashi S - - 1998
PURPOSE: We evaluate the long-term efficacy and side effects of transarterial embolization and ablation for renal arteriovenous malformations. MATERIALS AND METHODS: A total of 30 patients with cirsoid arteriovenous malformations causing massive hematuria underwent 34 procedures of embolization or ablation. We confirmed the ratios of occluded arteriovenous malformation areas on ...
Mineura K - - 1998
We report on the case of a huge varix that developed after the endovascular embolization of a cerebellar arteriovenous malformation (AVM) with a single drainer. A 21-year-old male presented with trigeminal neuralgia which was caused by the dilated drainer of the AVM. A varix was found at the basal vein ...
D'Andrea V - - 1998
The poor results obtained with the use of prosthesis in infrapopliteal arterial bypass grafting for critical limb ischaemia led to the introduction of several types of adjuvant arteriovenous fistula to improve the patency and limb salvage rates in patients who have no suitable autologous vein. The main aim of adjunctive ...
King A D - - 1998
Dual phase contrast enhanced spiral computed tomography (DPSCT) has the potential to improve detection of small insulin secreting islet cell tumours of the pancreas. Seven patients with biochemically proven insulinoma, who had previously undergone a range of negative radiological procedures, were referred for DPSCT. Images of the pancreas were obtained ...
Varan B - - 1998
An 8-year-old girl who had undergone chronic hemodialysis for 1 year presented with respiratory distress 24 h after a hemodialysis session. She had a massive pleural effusion of the left chest that was shown to be hemothorax by thoracentesis. After chest tube insertion, drainage was maintained for 2 days. Pleural ...
Berthezène Y - - 1998
Pulmonary arteriovenous fistula are an uncommon disorder, and are most frequently congenital, usually then associated with hereditary hemorrhagic telangectasia (Rendu-Osler-Weber disease). We present, to our knowledge, the first case of a pulmonary arteriovenous fistula detected by gadolinium-enhanced pulmonary magnetic resonance angiography and confirmed by digital subtraction pulmonary angiography in a ...
Hakaim A G - - 1998
Primary radiocephalic arteriovenous fistulas (RCAVFs) have classically been used for the initiation of dialysis. If a suitable forearm cephalic vein can be demonstrated, it is used to construct such a fistula. However, we have noted a tendency for RCAVF in patients with a history of diabetes mellitus (type I and ...
Hattori S - - 1998
We present a rare autopsy case of von Recklinghausen's disease with Moyamoya vessels and arteriovenous malformation. A 58-year-old female patient suffered from dysarthria and dysphagia. On examination, Parkinson's signs, pseudobulbar palsy, and muscular weakness of the left extremity and pyramidal tract signs were observed. An enhanced brain computed tomography revealed ...
Hashimoto H - - 1998
A case of dural arteriovenous malformation of the anterior cranial fossa developing after bifrontal craniotomy is reported. The nidus was fed mainly by the left anterior ethmoidal artery. It was drained into the right sylvian vein and superior ophthalmic vein with patency of the superior sagittal sinus. A left frontal ...
Nagashima H - - 1998
We report a case of ruptured callosal arteriovenous malformation embolized preoperatively with freeze-dried iohexol (Omnipaque *) as the contrast medium for an alcohol-soluble liquid embolic material. Iohexol was dissolved in 15% alcohol to produce a 25% solution (100 mg/ml iodine), which proved adequate for monitoring with digital subtraction angiography.
Nawa S - - 1998
This paper reports a case of an idiopathic renal arteriovenous fistula demonstrating a huge guitar-shaped aneurysm, which required a total nephrectomy. Although the patient insisted on having been asymptomatic, echocardiography and cardiac catheterization clearly revealed that the influence on hemodynamics was unexpectedly significant. Interestingly, the aneurysm was also considered to ...
Datta N N - - 1998
Dural AVMs can produce a wide variety of symptoms related to raised intracranial pressure, venous congestion, and cerebral ischaemia. We present a unique case of reversible dementia, due to venous hypertension. The cerebral ischaemia was caused by extensive bilateral arteriovenous malformations of the external carotid system, which drained into the ...
Akai T - - 1997
Summary: We treated a 62-year-old woman who suffered from intraventricular haemorrhage. Angiography revealed an arteriovenous shunt draining into a venous angioma. She was successfully treated by obliteration of the arteriovenous shunt with transarterial embolisation. Angiography performed after embolisation demonstrated that the persisting venous angioma served as the draning vein for ...
Niwa J - - 1997
BACKGROUND: Spinal dural arteriovenous fistulas are abnormal arteriovenous connections on the surface of the dura. The site of the fistula is most commonly in the thoracic and lumbosacral regions and they are rarely located in the cervical region. CASES: The patients had two asymptomatic dural arteriovenous fistulas of the cervicomedullary ...
Graham K - - 1997
A child with heterotaxia, azygous continuation of an interrupted inferior vena cava, single ventricle, and pulmonary atresia underwent the Kawashima modification of the Fontan procedure, which excluded hepatic venous return from the pulmonary blood flow. After the operation, the patient had development of pulmonary arteriovenous malformations, increasing cyanosis, and ventricular ...
Ishihara T - - 1997
Arteriovenous malformation (AVM) in a 22-year-old Japanese female is reported. The malformation presented as a nontender, pulsating tumor. An area of marked hypervascularity was revealed in the dermis and muscles of the right buttock by arteriography. The tumor was removed after embolizing the right superior and inferior gluteal arteries, which ...
Meyer F B - - 1997
The authors believe this to be the first published case in which a deep hypothermic cardiopulmonary bypass was used to facilitate resection of a large parenchymal arteriovenous fistula. The use of this procedure facilitated resection of the lesion by allowing compression and manipulation of large venous varices that were overlying ...
Beek F J - - 1997
Arteriovenous malformations (AVM) of the mandible are uncommon but can give rise to sudden massive haemorrhage. Transarterial or direct transosseous embolisation can be used to treat this condition but is not always effective. We describe a case of mandibular AVM with a single draining vein which was embolised successfully via ...
Terada T - - 1997
A 73-year-old female developed middle meningeal arteriovenous fistula during embolization of a falx meningioma. The cause of this complication was thought to be perforation by the guide wire during catheterization at the sharp bend in the sphenoidal portion of the middle meningeal artery. Embolization of the fistula and the feeding ...
Takeshita S - - 1997
OBJECTIVE: The development of collateral microvessels following therapeutic angiogenesis with vascular endothelial growth factor (VEGF) was investigated using a new system of microangiography that employs monochromatic synchrotron radiation (SR) and a high definition video system to visualize arteries with a spatial resolution of 30 microns. METHODS: Ischemia was induced in ...
Berlet M H - - 1997
A patient--with a history of postlaparoscopic deep venous thrombosis and rectus abdominis hematoma--experienced sudden respiratory decompensation requiring mechanical ventilation at an FIO2 of 100%. Initial PaO2 was 32 mm Hg. Pulmonary angiography revealed three unexpected pulmonary arteriovenous malformations as well as pulmonary emboli. Two pulmonary arteriovenous malformations were successfully embolized, ...
Akahane T - - 1997
AIMS: While a growing number of cases with pulmonary arteriovenous malformation (PAVM) have been reported, detailed analysis has yet to be found on the relation of abnormal vessels with the whole lung vasculature and airways. To gain more insight into the structure-function interrelation of this disease, we attempted to visualize ...
Kim D K - - 1997
OBJECTIVE AND IMPORTANCE: The development of a venous aneurysm associated with dural arteriovenous malformations rarely has been documented in the literature. CLINICAL PRESENTATION: A 64-year-old man with known dural arteriovenous malformations developed a venous aneurysms, as shown on sequential angiograms obtained during 2 years. INTERVENTION: The dural arteriovenous malformations were ...
Santoro T D - - 1997
The autologous arteriovenous fistula remains the best primary means of obtaining hemodialysis access. When this is unavailable, a prosthetic conduit must be considered. Selection of the appropriate access site has become increasingly important because of the increasing long-term survival of hemodialysis patients. A strategy is presented for sequential graft placement ...
Lewis A I - - 1997
The best treatment for deep-seated dural arteriovenous malformations (AVMs) remains controversial. Therapeutic options include transarterial and transvenous embolization, surgical excision of the dural nidus, ligation of draining veins, and stereotactically guided radiation treatment. The authors report on their experience with the application and technique of skull base surgical approaches for ...
Fathi M - - 1997
Arteriovenous malformations (AVMs) of the jaws are extremely rare lesions, which are probably hamartomas of developmental malformations. In this article we present an extremely high-flow AVM of the lower jaw with exsanguinating bleeding from the socket of the exfoliated tooth. Repeated episodic bleedings were controlled with local pressure and packing. ...
Davis A J - - 1997
Arteriovenous fistula of the scalp secondary to punch autograft technique is a relatively uncommon occurrence, similar to traumatic scalp arteriovenous fistulas from other causes. A pulsatile subcutaneous mass with an associated thrill or bruit and symptoms including pain or headache is a common presentation. Angiography is required for full diagnostic ...
Zurin A A - - 1997
This 63-year-old man presented with a right temporoparietal cortical infarction. A dural arteriovenous fistula involving the right transverse sinus was diagnosed on cerebral angiography. Transvenous embolization using detachable coils was performed; however, postembolization angiograms demonstrated retrograde filling of a cortical draining vein that was not seen on initial angiography. The ...
Mellière D - - 1997
Concomitant discovery of long-standing arteriovenous fistula (AVF) and proximal dilatation is commonplace whereas the disclosure of proximal arterial dilatation several years after closure of AVF is much more surprising and less often described. The goal of this study was to call attention to this late complication, to evaluate its prevalence, ...
Maher S M - - 1997
Traumatic arteriovenous fistula in the head and neck may present a difficult problem in management. We present a surgical case of traumatic arteriovenous fistula between the right subclavian artery and internal jugular vein with false aneurysm formation. Traumatic injury of the subclavian artery causing arteriovenous fistula with false aneurysm is ...
Magnussen J S - - 1997
An atypical variant of reflex sympathetic dystrophy (RSD) is presented in a 45 year old female with a vascular malformation of the right arm and chest wall. The mechanism was thought to be compression of the brachial plexus by the malformation. The unique scintigraphic features of this presentation of RSD ...
Morgan M K - - 1997
The aim of this study was to compare complications of surgery in arteriovenous malformations (AVMs) supplied by the middle cerebral artery (MCA) with and without a lenticulostriate arterial contribution. Ninety-two consecutive surgical resections of AVMs with an angiographically demonstrated MCA supply were performed between January 1989 and July 1996. Ten ...
Aletich V A - - 1997
Arteriovenous malformation nidus catheterization with a flow-directed catheter at times can be difficult owing to tortuosity of the intracranial vasculature and distal location of the nidus. Since January 1995, hydrophilic wire has been used in conjunction with the 1.8F flow-directed microcatheter in over 150 vessel embolizations with cyanoacrylate glue for ...
Ricolfi F - - 1997
PURPOSE: To present the clinical and radiologic features of giant perimedullary arteriovenous fistulas (GAVFs) in 12 consecutive cases and to evaluate the results of endovascular treatment. METHODS: We retrospectively reviewed the clinical and radiologic data as well as the results of balloon endovascular treatment obtained from 1980 to 1989. RESULTS: ...
Matsuyama T - - 1997
A 32-year-old female presented with a dural arteriovenous fistula in the transverse-sigmoid sinus caused by stenosis of the left internal jugular vein. The feeding arteries were embolized, resulting in nearly complete disappearance of the fistula. This case supports the idea that dural arteriovenous fistula is an acquired lesion caused by ...
Nemes A - - 1997
Endovascular procedures offer various methods for the treatment of posttraumatic arteriovenous fistulas. We report the treatment of a posttraumatic arteriovenous fistula between the left subclavian artery and internal jugular vein combined with a large subclavian false aneurysm. To avoid left thoracotomy we attained control of arterial bleeding by means of ...
Alexander S - - 1997
An eight-year-old girl was referred for the management of recurrent bleeding from the lower, left gingival region and a diffused swelling on the left side of her face. Doppler study and carotid angiogram were suggestive of an arteriovenous malformation. Segmental mandibular resection was performed after ligation of the left external ...
Mascalchi M - - 1997
PURPOSE: To determine whether identification of the feeding arteries of spinal vascular lesions with phase-contrast MR angiography benefits from the higher spatial resolution of three-dimensional (volume) acquisitions and flow-direction information provided by the phase reconstruction of two-dimensional acquisitions. METHODS: Fifteen patients with high- or low-flow spinal vascular lesions proved by ...
Pellettieri L - - 1997
PURPOSE: The concept of hidden compartments in cerebral arteriovenous malformations (AVMs), which is hereby launched, offers a new explanation for the neurosurgical and neuroradiological controversies concerning patients with AVMs. MATERIAL AND METHODS: Three patients who were considered completely cured of their AVMs, subsequently developed new areas of malformed vessels as ...
Marchesani F - - 1997
Pulmonary arteriovenous fistula (PAVF) is an abnormal connection between pulmonary arteries and veins. Patients with PAVF may have the Rendu-Osler-Weber syndrome, a disease transmitted by autosomal dominant mechanisms. Here we describe a case of PAVF in a 56-year-old woman, who was admitted to our department because of dyspnea, hemoptysis, and ...
Debaere C - - 1997
Pulmonary arteriovenous fistulae were first managed nonsurgically by Porstmann in 1977 with homemade metallic coils (1). During the intervening twenty years better catheterization techniques have been developed and our understanding of the clinical outcomings of these lesions has improved. This report discusses the natural history of pulmonary arteriovenous fistulae, including ...
Albert F K - - 1997
Excision of a ruptured aneurysm located at a lenticulostriate feeding artery associated with an arteriovenous malformation was performed using image guided neuronavigation in an 8-year-old child. The management of this lesion, which is rare in childhood, demonstrates the potential of combining frameless stereotaxy for precise target approach with conventional open ...
Kazekawa K - - 1997
Interventional radiology is becoming one of the standard treatments of arteriovenous malformation (AVM). Cyanoacrylate derivatives and polymer solutions are widely used to occlude the AVM nidus by their injection through a catheter, but they are far from satisfactory embolic liquids. For instance, cyanoacrylate derivatives sometimes glue the catheter to the ...
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