Fenestration surgery for otosclerosis: CT findings of an old surgical procedure

Numerous attempts to deal surgically with otosclerosis were made before the current method of stapedectomy with stapes prosthesis was established. We report a case with unique CT findings of a patient who underwent fenestrati on surgery for otosclerosis in the early 1940s. Recognition of this old sur gical procedure on the imaging scans may avoid misdiagnosis of labyrinthine fistulae or middle and inner ear malformations.