Gamma Knife Radiosurgery For Cavernous Sinus Dural Arteriovenous FistulasKeywords: dural arteriovenous fistula, gamma knife, arteriovenous fistula, vascular malformation, outcomeInteractive Manuscript
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What is the background behind your study?
Dural sinus arteriovenous fistula (DAVF) is rare lesion, and presents its symptoms related with the site and venous drainage route. Its treatment modality includes observation, intermittent manual compression of the ICA, microsurgery, transarterial or transvenous embolization, and radiosurgery.
What is the purpose of your study?
We assess the efficacy of gamma knife radiosurgery for the treatment of cavernous sinus DAVF.
Describe your patient group.
From May 1992 to March 2009, among the 4105 gamma knife radiosurgery procedures, 870 vascular lesions were treated. Among 20 cases of DAVF, 6 cases were involving cavernous sinus. Only 5 patients (4 women and 1man) were included, because of follow-up loss in one case. All patients, except one, had more than one of ocular symptoms, such as ptosis, chemosis, proptosis, and extraocular movement palsy, and all were confirmed by angiography.
Describe what you did.
Patients were treated with gamma knife radiosurgery alone (n=3) or with transarterial embolization (n=2). The median follow-up period after gamma knife radiosurgery was 30 months (range, 9-58 mo).
Describe your main findings.
All patients experienced improvement of their ocular symptoms clinically. Total obliteration of AVF was confirmed by follow-up angiography in 4 of them.
Describe the main limitation of this study.
This is a retrospective study.
Describe your main conclusion.
No patient experienced complications related with procedure and a recurrence of previous ocular symptoms till last follow-up.
Describe the importance of your findings and how they can be used by others.
Gamma knife radiosurgery may play a role as an effective alternative treatment modality for the failed or difficult to treat cavernous sinus DAVF by endovascular approach.
Dural sinus arteriovenous fistula (DAVF) is rare lesion, and presents its symptoms related with the site and venous drainage route. Its treatment modality includes observation, intermittent manual compression of the ICA, microsurgery, transarterial or transvenous embolization, and radiosurgery.
We assess the efficacy of gamma knife radiosurgery for the treatment of cavernous sinus DAVF.
From May 1992 to March 2009, among the 4105 gamma knife radiosurgery procedures, 870 vascular lesions were treated. Among 20 cases of DAVF, 6 cases were involving cavernous sinus. Only 5 patients (4 women and 1man) were included, because of follow-up loss in one case. All patients, except one, had more than one of ocular symptoms, such as ptosis, chemosis, proptosis, and extraocular movement palsy, and all were confirmed by angiography.
Patients were treated with gamma knife radiosurgery alone (n=3) or with transarterial embolization (n=2). The median follow-up period after gamma knife radiosurgery was 30 months (range, 9-58 mo).
All patients experienced improvement of their ocular symptoms clinically. Total obliteration of AVF was confirmed by follow-up angiography in 4 of them.
This is a retrospective study.
No patient experienced complications related with procedure and a recurrence of previous ocular symptoms till last follow-up.
Gamma knife radiosurgery may play a role as an effective alternative treatment modality for the failed or difficult to treat cavernous sinus DAVF by endovascular approach.
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