Fenestration Surgery for Otosclerosis: CT Findings of an Old Surgical Procedure
Dmitriy Niyazov
,a,
Alexandra Borgesa,
Akira Ishiyamaa,
Edward Zaragozaa and
Robert Lufkina
a From the Departments of Radiological Sciences (D.N., E.Z., R.L.) and Head and Neck Surgery (A.I.), University of California Los Angeles School of Medicine, Los Angeles, CA, and the Department of Radiology (A.B.), Portuguese Institute of Oncology, Porto, Portugal.
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FIG 1. CT scans of the temporal bones in an 87-year-old woman with a history of temporal bone surgery performed in the early 1940s.
A, Coronal-view scan obtained through the vestibule shows bony dehiscence of the lateral semicircular canal (open arrow) and a linear soft-tissue density closely applied to this defect. This is because of the fenestration surgery with creation of a labyrinthine window in the lateral semicircular canal and apposition of a tympanocutaneous flap (closed arrow).
B, Axial view.
C, Coronal-view scan obtained through the contralateral side shows the normal appearance of the lateral semicircular canals.
D, Axial view.
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