CRANIAL REGION | Transverse sinus |
HISTOPATHOLOGY | N/A; radiographic diagnosis of dural arteriovenous fistula |
PRIOR SURGICAL RESECTION | No |
PERTINENT LABORATORY FINDINGS | N/A |
Case description
A 75-year-old female presented with a headache and was found to have a left-sided acute subdural hematoma, for which she underwent craniotomy for hematoma evacuation and cranioplasty. Follow-up imaging revealed a dural arteriovenous fistula (DAVF) with cortical venous drainage (CVD) into the left transverse sinus ( Figure 12.61.1 ). Gamma Knife radiosurgery (GKRS) was recommended as an initial treatment for the DAVF ( Figure 12.61.2 ), which was followed by embolization.
Radiosurgery Machine | Gamma Knife – Perfexion |
Radiosurgery Dose (Gy) | 23, at the 50% isodose line |
Number of Fractions | 1 |
![](https://radiologykey.com/wp-content/uploads/2024/04/f61-01-9780323874373.jpg)
Postsubdural hematoma evacuation, axial postcontrast T1-weighted image showing a DAVF in the left transverse sinus (arrow). DAVF, Dural arteriovenous fistula.
![](https://radiologykey.com/wp-content/uploads/2024/04/f61-02-9780323874373.jpg)
Angiography confirmed the diagnosis of dural arteriovenous fistula (DAVF) in the left transverse sinus. The DAVF was treated with GKRS (23 Gy at the 50% isodose line), followed by embolization. GKRS, Gamma Knife radiosurgery.
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