A review on cranial dural arteriovenous fistula: What radiologists need to know.

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Congress:

ECR 2017

Poster Number:

C-1414

Type:

Educational Exhibit

Keywords:

Fistula, Embolism / Thrombosis, Arteriovenous malformations, Staging, Embolisation, Diagnostic procedure, Catheter venography, Catheter arteriography, Neuroradiology brain, Interventional vascular

Authors:

S. Wassef¹, M. Hayakawa², C. Derdeyn²; ¹52242, IA/US, ²Iowa City/US

DOI:

10.1594/ecr2017/C-1414

DOI-Link:

https://dx.doi.org/10.1594/ecr2017/C-1414

Conclusion

DAVF are a heterogeneous group of vascular malformations that share arteriovenous shunts from dural vessels.

Diagnosis can be difficult on CT and MRI, but should be thought of when an intracranial haemorrhage is in an unusual location or age group.

The Borden classification of dural arteriovenous fistulas (DAVF) classifies these lesions into three types based on site of venous drainage and presence or absence of cortical venous drainage. Unlike the Cognard classification, the direction of blood flow within the sinus or presence of venous ectasia are not considered.

Borden type I lesions (cognard grade I/IIA) considered "benign"; higher grades "aggressive“.

Complications (haemorrhage and venous congestion/hypertension and edema) depends on venous drainage and not arterial supply.