Arteriovenous Malformations of the Posterior Fossa

Management of posterior fossa arteriovenous malformations

BACKGROUND Posterior fossa arteriovenous malformations (AVMs) are rare vascular lesions, representing 7-15% of all intracranial AVMs. Although less frequent than supratentorial AVMs, they present higher rupture, morbidity, and mortality rates. Microsurgery, radiosurgery, and endovascular neurosurgery are treatment options for obliteration of those lesions. In this paper, we present a critical r...

Dural arteriovenous malformation in the posterior fossa.

Pial arteriovenous fistula in the posterior fossa.

Furthermore high vascular lesions may present high perfusion as well as brain cancer. The symmetrical calcifications and the diffuse enhancing nodular lesions are other important findings that suggest a diffuse cerebral condition. Actually the nodular enhancing lesions constitute pre-cystic lesions as same cases show in the literature. Actually the leucodistrophy described in this entity is rat...

Long-term Outcomes of Gamma Knife Surgery for Posterior Fossa Arteriovenous Malformations

The long-term outcomes of gamma knife surgery (GKS) in patients with posterior fossa arteriovenous malformations (AVMs) were retrospectively analyzed in 82 patients followed up for more than 5 years to evaluate the efficacy and safety. The median AVM volume at GKS was 0.95 cm(3). The prescribed dose to the AVM margin was median 18 Gy with 1-18 isocenters. The actual complete AVM obliteration ra...

Increased prevalence and rupture status of feeder vessel aneurysms in posterior fossa arteriovenous malformations.

BACKGROUND Posterior fossa arteriovenous malformations (AVMs) are considered to have a higher risk of poor outcome, as are AVMs with associated aneurysms. We postulated that posterior fossa malformations may be more prone to associated feeder vessel aneurysms, and to aneurysmal source of hemorrhage. OBJECTIVE To examine the prevalence and hemorrhagic risk of posterior fossa AVM-associated fee...