Cerebral arteriovenous fistulas induced by dural arteriovenous shunts

Dural arteriovenous shunts and pial arteriovenous fistulas are uncommonly associated. Their etiology, pathogenesis, and natural history are still unclear and are likely different. We present three cases of high-flow dural arteriovenous shunts associated with pial arteriovenous fistulas and discuss their pathogenesis, anatomic association, and angioarchitecture. We propose that venous steal effect in the dural sinus secondary to the high-flow dural arteriovenous shunt induced the pial arteriovenous fistulas. Treatment of the high-flow dural arteriovenous shunts and the induced pial arteriovenous fistulas are discussed.     

Brain arteriovenous malformations

An arteriovenous malformation (AVM) is a particular abnormality of blood vessels. Brain AVMs are congenital, but symptoms usually do not appear until the second decade of life - if at all. The most common presenting symptom is a brain hemorrhage, but other possible symptoms include neurological deficits, seizures and headaches. Until recently, the gold standard for diagnosing AVM was conventional angiography. However, computed tomography and magnetic resonance angiography are now the first-line diagnostic tools for AVMs. This article reviews the presenting symptoms, diagnostic procedures and treatment options for brain AVMs, including embolization, micro-surgery and radiosurgery. This article is a Directed Reading. Your access to Directed Reading quizzes for continuing education credit is determined by your CE preference. For access to other quizzes, go to www.asrt.org/store.     

硬脑膜动静脉瘘

硬脑膜动静脉瘘(dural arteriovenous fistula,DAVF)是指动静脉交通在硬脑膜及其附属物大脑镰和小脑幕的一类血管性疾病,也称为硬脑膜动静脉畸形(DAVM).该病约占颅内血管畸形的10%～15%.     

Occipital dural arteriovenous malformations

Summary The angiographic features of four occipital dural arteriovenous malformations are presented. Special attention is directed to their blood supply from cervical branches of the subclavian artery and to their venous drainage.

---

Occipitale durale arteriovenöse Mißbildungen

Zusammenfassung Beschreibung von 4 Patienten mit occipital gelegenen duralen arteriovenösen Mißbildungen. Die Blutversorgung geschah hauptsächlich über cervicale Äste der A. subclavia.

---

Malformations artério-veineuses durales occipitales

Résumé Dans cette communication on discute l'aspect angiographique de quatre malformations artérioveineuses durales occipitales en portant une attention spéciale sur le drainage veineux et sur l'afference par branches cervicales de l'artère sous-clavière.