Risk Factors of Recurrence in Pediatric Congenital Cholesteatoma

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Objective:To examine the risk factors of recurrence in pediatric congenital cholesteatoma.Study Design:Retrospective chart review.Setting:University hospital.Patients:Sixty-seven patients having tympanic type of congenital cholesteatoma under 15-years old at surgery.Interventions:Canal wall-up tympanomastoidectomy (n = 30) or transcanal atticotomy/tympanoplasty (n = 37) was performed depending on cholesteatoma extension, 16 of which were followed by second-look surgery. Preoperative computed tomography (CT) before second-look surgery or follow-up CT was performed to detect residual recurrence 1 year after the surgery. Cholesteatoma found at the second surgery was also included in the recurrence. All patients had no recurrent cholesteatoma at the last follow-up (median, 61 mo after surgery).Main Outcome Measures:Possible predictive factors were compared between the groups.Results:Residual cholesteatoma and retraction cholesteatoma occurred in 21 and 6%, respectively. There was no significant difference in age, sex, and type of cholesteatoma (open or closed) between the groups; however, Potsic stage and status of stapes involvement were more advanced in the residual cholesteatoma group. All residual lesions could be detected by follow-up CT or by second-look surgery. All of four retraction cholesteatoma patients were male, young at the surgery and in stage IV.Conclusion:Recurrence mostly occurred as residual cholesteatoma, suggesting that CT is recommended as a follow-up tool for congenital cholesteatoma. Advanced lesions had the risk of residual cholesteatoma, suggesting that complete removal of epithelium is important. Although rare, young advanced-stage patients had risk of retraction cholesteatoma and therefore normal mucosa should be preserved as much as possible for these patients.

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