A Rare Case of Co-existent Superior Semicircular Dehiscence and Sigmoid Sinus Plate Dehiscence Contributing to Pulsatile Tinnitus.

Pulsatile tinnitus (PT) is an uncommon but often debilitating symptom, frequently associated with vascular etiologies, tumors, or structural abnormalities of the temporal bone. We present the case of a 40-year-old woman diagnosed with concurrent unilateral superior semicircular canal dehiscence (SSCD) and sigmoid sinus plate dehiscence (SSPD), both contributing to her symptoms. This case highlights the critical role of thorough clinical and radiological assessment in detecting multiple coexisting etiologies in patients with PT.