High-resolution computed tomography predicts optimal cochlear implantation strategy in patients with chronic otitis media

Figure 2 Representative preoperative high-resolution computed tomography dictates surgical strategy and correlates with postoperative outcomes. A: Well-defined soft-tissue opacity (hollow arrow) confined to the epitympanum, with a well-aerated mastoid; B: Fully inserted cochlear implant electrode array (hollow arrowhead) with preserved ear canal anatomy after successful canal wall-up mastoidectomy; C: Complete opacification of the middle ear and mastoid (solid asterisk), with severe cochlear ossification (dotted circle) and posterior canal wall erosion; D: Obliterated mastoid cavity and partially inserted electrode array (solid arrowhead) following subtotal petrosectomy. CWU: Canal wall-up; Pre-op: Pre-operative; Post-op: Post-operative; STP: Subtotal petrosectomy.