Abstract
Objective: To investigate the cumulative recurrence rate of pars tensa retraction cholesteatoma on the new staging system established by Japan Otological Society (JOS). Materials and Methods: It is a retrospective study and performed in a tertiary and academic center. The series comprised 71 patients with pars tensa retraction cholesteatoma who underwent surgical treatment by a single surgeon between 1994 and 2007. Results: The 10-year cumulative recurrence rate of pars tensa retraction cholesteatoma was 12.1% overall, 20.0% in Stage I, 14.4% in Stage II and 6.2% in Stage III. Conclusions: The JOS staging system for pars tensa retraction cholesteatoma did not reflect the prognosis. The development of a common international staging system for cholesteatoma in the future is desirable.
Highlights
The recurrence rate of cholesteatoma depends upon the follow-up periods, surgical methods, a surgical technique, an extension of cholesteatoma, a method of statistical analysis, etc. [1]
The Japan Otological Society (JOS) proposed a staging system for attic cholesteatoma in 2008 [2], and we reported the recurrence rate of attic cholesteatoma based on this staging system [3]
We describe the recurrence rate of pars tensa retraction cholesteatoma based on this new staging system
Summary
The recurrence rate of cholesteatoma depends upon the follow-up periods, surgical methods, a surgical technique, an extension of cholesteatoma, a method of statistical analysis, etc. [1]. The recurrence rate of cholesteatoma depends upon the follow-up periods, surgical methods, a surgical technique, an extension of cholesteatoma, a method of statistical analysis, etc. We previously reported that the recurrence rate increased during long-term follow-up and that Kaplan-Meier survival analysis should be used to calculate the recurrence rate [1]. The Japan Otological Society (JOS) proposed a staging system for attic cholesteatoma in 2008 [2], and we reported the recurrence rate of attic cholesteatoma based on this staging system [3]. JOS proposed a revised staging system including attic cholesteatoma and pars tensa retraction cholesteatoma in 2010 [4]. We describe the recurrence rate of pars tensa retraction cholesteatoma based on this new staging system
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