title: Prognostic factors of recidivism in pediatric cholesteatoma surgery.
abstract: OBJECTIVE
  To analyze the results on a series of pediatric cholesteatomas, using various preoperative factors, including some of the proposed classification systems, to identify those factors that influence the postoperative result.
  
  
  METHODS
  Retrospective review of 118 children with acquired cholesteatoma who underwent surgery from January 1978 to October 1999. The median observation period was 5 years, range 1-20 years. The rate of recidivism calculated using the Kaplan-Meier method and relative risk by the Cox regression model.
  
  
  RESULTS
  Cholesteatoma in patients less than 8 years old with mastoid involvement had significantly higher risk of recidivism than the other groups examined.
  
  
  CONCLUSIONS
  In this study, cholesteatoma recurred up to 5 years after operation, and long-term close follow-up is important especially in cases involving higher risk such as younger child with mastoid extension of cholesteatoma.
authors.affiliation: Departments of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul 110-744, South Korea.
authors.forename: Soon-Hyun
authors.initials: SH
authors.lastname: Ahn
authors.forename: Seung Ha
authors.initials: SH
authors.lastname: Oh
authors.forename: Sun O
authors.initials: SO
authors.lastname: Chang
authors.forename: Chong-Sun
authors.initials: CS
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D018424:Cholesteatoma, Middle Ear / Q000601:surgery*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D013517:Otorhinolaryngologic Surgical Procedures; D011379:Prognosis; D012008:Recurrence; D012044:Regression Analysis; D012189:Retrospective Studies; D012307:Risk Factors