Bilateral thalamic dysfunction secondary to venous congestion may result from either venous sinus thrombosis or high flow arteriovenous malformations or a combination of both. We present a case of bilateral thalamic edema resulting from concomitant choroid plexus arteriovenous malformation (AVM) and straight sinus thrombosis and describe our treatment approach. The patient presented with severa...

Intraarterial digital subtraction angiography (DSA) in two patients with spinal dural arteriovenous fistulas demonstrated the major feeding arteries and the venous drainage of the respective malformations. However, the dural component of the malformations--which distinguishes them from intradural malformations--could not be recognized, nor was normal cord vasculature demonstrated. In a patient ...

Arteriovenous malformations (AVM) are generally considered to be cured following angiographically proven complete resection. However, rare instances of AVM recurrence have been reported in both children and adults with negative findings on postoperative angiography. The authors present the case of a 12-year-old boy with recurrent AVM. The AVM was originally fed by the pericallosal arteries on b...

Pulmonary arteriovenous malformations (PAVMs), although most commonly congenital, are usually detected later in life. We present a case of a 25-year-old woman with no previous history of AVM or telangiectasia, who presented with life-threatening hypoxia, hypotension, and pleuritic chest pain in 36th week of gestation. Chest tube placement revealed 4 liters of blood. Patient was subsequently fou...

Arteriovenous malformations (AVM) are congenital vascular anomalies but are usually first noticed in childhood or adulthood. Head and neck is the most common location for AVM. Extracranial lesions are rare compared to intracranial lesions. The rapid enlargement of the malformation leading to symptoms is usually triggered by trauma or hormonal changes of puberty or pregnancy. Traumatic AVM of th...

Abstract Endovascular embolization techniques are showing an extraordinary potential to treat patients suffering from complex neurovascular malformations. The with liquid embolic agents via Onyx is a prominent approach arteriovenous malformation (AVM). However, intraoperative reflux of the can be very challenging and, thus, impairing full success endovascular treatment. A possible technique pre...

Objective: to describe our experience with pre-operative evaluation of intracranial vascular malformations using functional magnetic resonance (fmRi). Method: Assessment of eight patients with cerebral vascular malformations (seven arteriovenous malformations [Avm] and one cavernous malformation) referred for pre-operative fmRi mapping of the eloquent cortex. An oxygen level-dependent technique...

A 55 year-old man started with headaches in 2005. He underwent MRI that showed left frontal arteriovenous malformations (AVM) without evidence of hemorrhage. An arteriography revealed AVM supplied by the left anterior cerebral artery (Figures 1A and 1B). In 2010 the patient had an episode of cerebral hemorrhage confirmed with CT and MRI (Figures 2A, 2B and 2C). Referred to our service for treat...

Arteriovenous malformations (AVMs) associated with aneurysm have rarely been reported in the literature. The present study reports the case of a 21-year-old pregnant female patient who presented with a subarachnoid hemorrhage and an intracranial hematoma located in the anterior end of the corpus callosum. Furthermore, an anterior cerebral aneurysm and an AVM were identified by digital subtracti...

Spinal arteriovenous malformation (AVM) is a broad term that constitutes diverse vascular pathologies. To date, various classification schemes for spinal AVM have been proposed in literature, which helped neurosurgeons understand the pathophysiology of the disease and determine an optimal treatment strategy. To discuss indications and results of surgical and endovascular interventions for spina...