Pulmonary arteriovenous malformation is an abnormal communication between artery and a vein, causing clinical manifestations, such as chronic hypoxemia embolic events. Arteriovenous malformations were treated surgically, with significant rate of complications. In the 1970 ́s, first percutaneous catheter embolization was performed coils. We describe three cases in which techniques effective to pr...

Patients who harbor brain arteriovenous malformations are at risk for intracranial hemorrhage. These malformations are often seen in inherited vascular diseases such as hereditary hemorrhagic telangiectasia. However, malformations within the brain also sporadically occur without a hereditary-coding component. Here, we review recent insights into the pathophysiology of arteriovenous malformation...

Arteriovenous malformations of the brain are congenital vascular lesions that affect 0.01-0.50% of the population, and are generally present in patients aged 20-40 years. The usual clinical presentations are haemorrhage, seizures, progressive neurological deficit, or headache. Results of natural history studies have shown a yearly haemorrhage rate of 1-4%. Frequency of rebleeding has increased ...

Vascular anomalies are a heterogeneous group of congenital blood vessel disorders more typically referred to as birthmarks. Subcategorized into vascular tumors and malformations, each anomaly is characterized by specific morphology, pathophysiology, clinical behavior, and management approach. Hemangiomas are the most common vascular tumors. Lymphatic, capillary, venous, and arteriovenous malfor...

1. Dawson RC Ill , Tarr RW, Hecht ST, et al. Treatment of arteriovenous malformations of the brain with combined embolization and stereotactic radiosurgery: results after 1 and 2 years. AJNR 1990;11 :857-864 2. Fournier D, Terbrugge K, Rodesch G, Lasjaunias P. Revascularization of brain arteriovenous malformations after embolization with bucrylate. Neuroradiology 1990;32:497-501 3. Rao VRK, Man...

Sclerotherapy for arteriovenous malformations has to be performed under general anaesthesia because of the pain during injection and the need of careful monitoring. Two cases with arteriovenous malformations of the face regions are presented in whom percutaneous sclerotherapy was performed under local anaesthesia in the outpatient clinic. The sessions were uneventful and there was a visible dec...

Cerebral manifestations of Osler-Weber-Rendu disease (OWRD, hereditary haemorrhagic telangiectasia) including telangiectases, venous malformations, and arteriovenous malformations, are usually under-recognised. The highest complication rate is observed in high flow cerebral arteriovenous malformations, which may present with headache, epilepsy, ischaemia, or haemorrhage. Cerebral air embolism d...

Cerebral manifestations of Osler-Weber-Rendu disease (OWRD, hereditary haemorrhagic telangiectasia) including telangiectases, venous malformations, and arteriovenous malformations, are usually under-recognised. The highest complication rate is observed in high flow cerebral arteriovenous malformations, which may present with headache, epilepsy, ischaemia, or haemorrhage. Cerebral air embolism d...

Intracranial arteriovenous malformations can be further complicated by the development of aneurysms, which themselves carry the risk of rupture and hemorrhage. New endovascular techniques allow for more treatment options for these lesions in the setting of arteriovenous malformations. Here we present the case of a patient who developed an aneurysm in the setting of an arteriovenous malformation...

Four patients with spontaneous arteriovenous malformations of cervical vessels have been presented. The embryology of these vessels has been discussed in order to suggest an explanation for the apparent difference in the incidence of arteriovenous malformations involving the internal carotid artery and those involving either the vertebral or the external carotid arteries. A fifth case (S.T.) is...