Dural arteriovenous fistulas are not observed to convert to a higher grade after partial embolization.
Neurosurg Focus
; 56(3): E8, 2024 03.
Article
in En
| MEDLINE
| ID: mdl-38428013
ABSTRACT
OBJECTIVE:
Borden-Shucart type I dural arteriovenous fistulas (dAVFs) lack cortical venous drainage and occasionally necessitate intervention depending on patient symptoms. Conversion is the rare transformation of a low-grade dAVF to a higher grade. Factors associated with increased risk of dAVF conversion to a higher grade are poorly understood. The authors hypothesized that partial treatment of type I dAVFs is an independent risk factor for conversion.METHODS:
The multicenter Consortium for Dural Arteriovenous Fistula Outcomes Research database was used to perform a retrospective analysis of all patients with type I dAVFs.RESULTS:
Three hundred fifty-eight (33.2%) of 1077 patients had type I dAVFs. Of those 358 patients, 206 received endovascular treatment and 131 were not treated. Two (2.2%) of 91 patients receiving partial endovascular treatment for a low-grade dAVF experienced conversion to a higher grade, 2 (1.5%) of 131 who were not treated experienced conversion, and none (0%) of 115 patients who received complete endovascular treatment experienced dAVF conversion. The majority of converted dAVFs localized to the transverse-sigmoid sinus and all received embolization as part of their treatment.CONCLUSIONS:
Partial treatment of type I dAVFs does not appear to be significantly associated with conversion to a higher grade.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Central Nervous System Vascular Malformations
/
Embolization, Therapeutic
/
Endovascular Procedures
Limits:
Humans
Language:
En
Journal:
Neurosurg Focus
Journal subject:
NEUROCIRURGIA
Year:
2024
Type:
Article