We read with great interest the article written by Alomari et al, and agree with the authors that Klippel-Trenaunay syndrome is not associated with spinal cord AVM. However, in their discussion, in relationship to spinal cord AVM with Parkes Weber syndrome, they comment briefly that “Spinal AVM has not been reported to be a feature of Parkes Weber syndrome.” Here, we demonstrate a case of Parke...

ARTERIOVENOUS MALFORMATIONS AVM Incidence Since only 12% of AVMs cause symptoms, the incidence of AVM in the United States is not fully known. The incidence is thought to be around 1 per 100,000, equaling 300,000 cases. As technology advances and early detection increases, these numbers may rise. The average age of AVM diagnosis is 33 years, with 64% being identified before age 40 (Greenburg, 2...

BACKGROUND AND OBJECTIVE To date, there have been few published studies examining the relationship between arteriovenous malformation (AVM) angioarchitecture and hemorrhagic presentation among children with cerebral AVMs. This study examines this relationship in this unique population, in whom symptomatic presentation of cerebral AVM is the norm rather than the exception. METHODS A cohort of ...

Arteriovenous malformation (AVM) is a tangle of various size vessels with arterial and venous histological characteristics but without evidence of an intervening capillary network [1]. Uterine AVM is classified as either congenital or acquired. Definitive diagnosis has been traditionally made by angiography. With the development of color Doppler and power Doppler ultrasound, diagnosis is now ea...

We read with interest the report by MONTANI et al. [1] of fatal rupture of pulmonary arteriovenous malformation (AVM) in a patient with hereditary haemorrhagic telangiectasis (HHT) and severe pulmonary arterial hypertension (PAH) confirmed by right heart catheterisation. The authors hypothesised that bleeding from pulmonary AVM may have been facilitated by increased mean pulmonary artery pressu...

We present a patient with a rare cerebrovascular malformation consisting of a typical arteriovenous malformation (AVM) with a nidus and a venous malformation (VM) in a single lesion. The AVM component was successfully obliterated by radiosurgery, whereas the VM was completely preserved. Radiosurgery can be an effective treatment technique for treating this type of malformation because it allows...

relatively new embolic material consisting of ethylene vinyl alcohol polymer dissolved in dimethyl sulfoxide (DMSO) that is mainly used for embolization of a brain arteriovenous malformations (AVM) (1-4). The solidification of Onyx occurs in an ‘outside-in’ precipitation process which often allows better forward penetration than n-butyl cyanoacrylate (NBCA) (2). However, experiences of using On...

Avian vacuolar myelinopathy (AVM) is a neurologic disease that has been diagnosed in free-ranging birds in the southeastern United States. Bald eagles (Haliaeetus leuocephalus), American coots (Fulica americana), and mallards (Anas platyrhynchos) have been affected. Previous investigations have not determined the etiology of this disease. In November and December 2002, we attempted to induce AV...

Calcium signaling is known to be important for regulating the guidance of migrating neurons, yet the molecular mechanisms underlying this process are not well understood. We have found that two different voltage-gated calcium channels are important for the accurate guidance of postembryonic neuronal migrations in the nematode Caenorhabditis elegans. In mutants carrying loss-of-function alleles ...

Our objective was to provide guidelines about the use of stereotactic radiosurgery in symptomatic patients with imaging-identified arteriovenous malformations (AVMs) of the brain. We reviewed evidence-based medicine and clinical experience with radiosurgery for AVM of the brain to develop guidelines and provide scientific foundation for patients and physicians. Major recommendations include the...