Abstract
We evaluated the usefulness of gamma knife radiosurgery (GKS) for patients with arteriovenous malformations (AVMs) associated with arterial aneurysms (AN). Eight AVM cases with AN were treated by GKS. The type of the AN was proximal in 4 cases, distal in 3 cases, and unrelated in 1 case. All proximal AN and unrelated AN cases had received neck clipping before GKS. Among the 3 distal AN cases, GKS was the first treatment in 2 cases. The mean follow-up period was 40 months (range 6-84 months) after GKS. AVM obliteration with AN disappearance was noted in 2 cases with distal AN 18-24 months after GKS alone. The other 6 AVMs showed obliteration in 2 cases, size decrease in 3 cases, and no change in 1 case 6-51 months after GKS. One case developed minor hemorrhage from the AVM after GKS. In selected AVM cases associated with distal AN, GKS alone may be indicated.
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