[Open or/and closed operation technic in case of cholesteatoma (author's transl)].

The different, but partly very high percentage of recurrence cholesteatoma and the by that necessary re-operations could lead to the conclusion to turn away from the closed operation technic. We have tried by means of 654 re-operations to find out the reasons for failures made by us and others. From this result conclusions were drawn in regard of improving diagnosis, indication and therapy. - Both operation technics shall for the future keep their right to exist, but with a different indication basis. We give the open technic - because for the advantage of its radicality against the cholesteatoma - again more change, keep in mind to use in addition the Mastoid Obliteration Method. The "second look" in case of the closed technic should be indicated exceptionally.