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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Spittau, Björn Millán, Diego San El-Sherifi, Saad Hader, Claudia Singh, Tejinder Pal Motschall, Edith Vach, Werner Urbach, Horst Meckel, Stephan |
| Description | Author Affiliation: Spittau B ( Institute for Anatomy and Cell Biology, Department of Molecular Embryology, Albert-Ludwigs-University Freiburg) |
| Abstract | Dural arteriovenous fistulas (DAVFs) of the hypoglossal canal (HCDAVFs) are rare and display a complex angiographic anatomy. Hitherto, they have been referred to as various entities (for example, 'marginal sinus DAVFs') solely described in case reports or small series. In this in-depth review of HCDAVF, the authors describe clinical and imaging findings, as well as treatment strategies and subsequent outcomes, based on a systematic literature review supplemented by their own cases (120 cases total). Further, the involved craniocervical venous anatomy with variable venous anastomoses is summarized. Hypoglossal canal DAVFs consist of a fistulous pouch involving the anterior condylar confluence and/or anterior condylar vein with a variable intraosseous component. Three major types of venous drainage are associated with distinct clinical patterns: Type 1, with anterograde drainage (62.5%), mostly presents with pulsatile tinnitus; Type 2, with retrograde drainage to the cavernous sinus and/or orbital veins (23.3%), is associated with ocular symptoms and may mimic cavernous sinus DAVF; and Type 3, with cortical and/or perimedullary drainage (14.2%), presents with either hemorrhage or cervical myelopathy. For Types 1 and 2 HCDAVF, transvenous embolization demonstrates high safety and efficacy (2.9% morbidity, 92.7% total occlusion). Understanding the complex venous anatomy is crucial for planning alternative approaches if standard transjugular access is impossible. Transarterial embolization or surgical disconnection (morbidity 13.3%-16.7%) should be reserved for Type 3 HCDAVFs or lesions with poor venous access. A conservative strategy could be appropriate in Type 1 HCDAVF for which spontaneous regression (5.8%) may be observed. |
| File Format | HTM / HTML |
| ISSN | 00223085 |
| e-ISSN | 19330693 |
| Journal | Journal of Neurosurgery |
| Issue Number | 4 |
| Volume Number | 122 |
| Language | English |
| Publisher | American Association of Neurological Surgeons |
| Publisher Date | 2015-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Neurosurgery Central Nervous System Vascular Malformations Pathology Surgery Endovascular Procedures Occipital Bone Cerebral Angiography Drainage Meta-analysis |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neurology (clinical) Surgery |
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