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 ...

congenital double lip anomaly is an infrequent developmental abnormality affecting the lips, more commonly the upper lip. 5 cases of double lip are being reported for the first time from iran and all confined to the upper lip. a new surgical excision is being introduced which is called transverse cupid bow-like elliptical incision. the previous traditional method was a simple elliptical excisio...

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...

This report is of a rare case of mixed oligo-astrocytoma and arteriovenous malformation (AVM) associated with an aneurysm in a 50-year-old man, who presented with a progressive history of headache and vomiting due to acute intracranial hemorrhage. Initial images were suggestive of a right frontal AVM and an aneurysm on the left anterior cerebral artery (ACA) for which a right frontotemporal cra...