Persistent Petrosquamosal Sinus: High Incidence in Cases of Complete Aplasia of the Semicircular Canals

Abstract

The PSS presents a risk for cochlear implant surgery that can be detected by the neuroradiologist in advance. Venous CT angiography is advisable in certain cases. The previous assumption that a persistent PSS is encountered more frequently in cases of skull base deformity can be affirmed in the special situation of complete aplasia of the SCCs.