Vertigo after stapes surgery: the role of high resolution CT

CT findings in patients with vertigo after stapes surgery include a prosthe sis shaft entering the vestibule and compressing the saccule, a complete di slocation of the stapes prosthesis, air bubbles and fluid collections withi n the vestibule and outside the oval window indicating a perilymphatic fist ula, and bony fragments leading to compression of the basal saccule. Althou gh immediate post-operative vertigo is often transient, patients with persi stent or recurrent vertigo should be imaged as high resolution CT will dete rmine the underlying cause in the majority of cases.