fig 3.

39 year-old woman referred for SNHL and vertigo 2 months after stapedectomy complicated by suppurative labyrinthitis.

A, Coronal CT scan shows complete filling of the middle ear and oval window niche, enlargement of the oval window (double arrows), osseous erosion of the promontory and the lateral semicircular canal (single arrow), and enlargement of the vestibule and superior semicircular canal (arrowhead).

B, Contrast-enhanced coronal T1-weighted MR image shows enhancement of an inflammatory mass of the epitympanum in communication with the lateral semicircular canal (arrow). Note associated abnormal enhancement of the vestibule, superior semicircular canal (arrowhead), and internal auditory canal.