The role of computed tomography scanning in XXXX media.

@entity1 @entity3540 @entity473 @entity102
The purpose of this study was to determine the role of high-definition computed tomography (CT) in @entity102 media (COM) @entity1 and to present which parameters were useful or misleading for preoperative evaluation for management. Fifty cases of COM that underwent preoperative CT scanning at a tertiary referral center were retrospectively analyzed. Their CT scan reports were compared with the operative findings. The @entity1 had undergone tympanoplasty with or without mastoidectomy for COM between April 2008 and January 2010. @entity1 charts were used to obtain the necessary data. In 62% (31/50) of cases, the CT scan showed the presence of @entity3540 . Operative findings revealed @entity3540 in 61.8% (19/31) of these cases. However, when a bone eroding soft tissue mass involved the epitympanum on CT, the presence of @entity3540 was observed in 83.3% (15/18) of cases intraoperatively. @entity3540 was present in the mastoid or middle ear intraoperatively in 77.7% (7/9) of @entity1 with an external ear bony @entity473 found on CT. Despite 89.7, 85.29, and 90% agreement ratios for dehiscence of facial canal, lateral semicircular canal, and tegmen, respectively, CT could not detect dehiscence of these anatomic structures successfully. Based on these results, CT scanning has limitations but is a useful adjunct for the surgical management of COM @entity1 .
