Posterior Semicircular Canal Dehiscence Imaging Findings: Case Report

Abstract

The temporal bone has a complex anatomy, including the semicircular canals in the vestibular system, which are essential for human balance. Posterior semicircular canal dehiscence (PSCD) is a rare condition characterized by bone erosion in this structure, leading to vestibulocochlear symptoms such as vertigo, tinnitus, and hearing loss. Objective: To describe the radiological findings of a patient diagnosed with PSCD through high-resolution computed tomography using multiplanar reconstructions in the Stenvers and Pöschl views. Results: The findings included a high jugular bulb associated with dehiscence, while other inner ear structures remained intact. The radiological findings were correlated with the patient's symptoms, emphasizing the importance of imaging for accurate diagnosis. Final Considerations: This case report contributes to the clinical and radiological understanding of PSCD, highlighting the importance of a multidisciplinary approach for management and its impact on patients' quality of life. Further studies are needed to deepen knowledge and improve therapeutic strategies.