RT Journal Article SR Electronic T1 Dural arteriovenous fistula (D-AVF): a rare cause of symmetrical bithalamic changes with free diffusivity changes JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP e38 OP e38 DO 10.1136/neurintsurg-2014-011186.rep VO 7 IS 11 A1 Bhogal, Pervinder A1 Duxbury, Oliver A1 Rangi, Prem YR 2015 UL http://jnis.bmj.com/content/7/11/e38.abstract AB We report a rare case of an encephalopathic presentation of a posterior fossa dural arteriovenous fistula with concomitant florid symmetrical bithalamic free diffusivity changes on MRI in a previously healthy individual. We describe the structural and functional imaging findings and the role of catheter angiography in diagnosis, prognostication and the timing and strategy in the management of this challenging vascular entity.