Sigmoid sinus dehiscence resurfacing as treatment for pulsatile tinnitus

Aim: To report a case of sigmoid sinus dehiscence presenting with pulsatile tinnitus and treated successfully with resurfacing. Case report: This patient presented with pulsatile tinnitus due to sigmoid sinus dehiscence. This was successfully treated using only soft tissue resurfacing. Conclusion: Sigmoid sinus dehiscence is a rare but treatable cause of pulsatile tinnitus. It can occur in the absence of a diverticulum, and is not necessarily limited to the transverse sigmoid junction. When resurfacing, care must be taken not to significantly alter the extraluminal diameter of the sigmoid in a dominant sinus, as this raises the risk of post-operative hydrocephalus.