Conclusion: Surgical treatment of fibrous dysplasia of the temporal bone (TBFD) revealed relatively good outcomes. Also, active surgical intervention is necessary to prevent the formation of secondary cholesteatoma or other complications. In particular, FD involving the inner ear may require greater caution when deciding on the resection area and timing of surgery.
Objectives: The purpose of this study was to analyze clinical manifestations of TBFD and its surgical outcomes.
Patients and methods: Nine patients diagnosed with TBFD after surgery at three tertiary referral centers were included. Pre- and postoperative clinical, audiological, and radiological findings were analyzed retrospectively.
Results: Most patients (88.9%) showed FD involving the mastoid and adjacent area. Radiological patterns consisted of six pagetoid and three sclerotic forms; seven patients were monostotic, whereas two patients were polyostotic. Canalplasty (CP) was performed in six cases and intact canal wall mastoidectomy was performed in three of them; hearing gain was achieved in five and one patient maintained preoperative normal hearing. Two patients underwent revision CP and showed no recurrence. In addition, one case had secondary cholesteatoma formed by an obstruction of the external auditory canal; another with a fast-growing cystic mass in the petrous bone underwent transmastoid labyrinthectomy and had no recurrence for 11 months.