Treatment of Dural Arteriovenous Fistulae (dAVF's) at the Superior Sagittal Sinus (SSS) Using Embolisation Combined with Micro- or Radiosurgery

Abstract

DAVF's at the SSS are extremely rare and usually present with intracranial haemorrhage (ICH) or a progressive neurological deficit. Due to their midline location and multiple arterial supply, endovascular treatment alone often fails in eliminating the fistula. Therefore, endovascular, combined with neurosurgical and/or radiosurgical treatment is often needed to cure the patient. We summarized our experience with three male patients over a ten-year period who suffered from dAVF's involving the middle and posterior third of the SSS. Two of them presented with an ICH during the clinical course. Despite multiple transarterial embolisations, complete fistula occlusion could not be achieved in any of them. Nevertheless, neurological symptoms improved in all cases. One patient refused further treatment and died six years later due to an ICH. Another patient was finally cured by microsurgical coagulation of the fistula. In the remaining patient stereotactic radiosurgery (SRS) was performed after nearly complete endovascular occlusion. We strongly recommend microsurgery and/or radiosurgery as adjunctive measures, if embolisation alone fails to eliminate these dangerous fistulae.

Dural Arteriovenous Fistula - Superior Sagittal Sinus - Embolisation - Microsurgery - Stereotactic Radiosurgery - Gamma Knife

References

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